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recipe: Implement run
recipe: basic recipe parsing
2026-05-26 03:06:26 +02:00 · 2026-05-23 00:10:08 +02:00 · 2026-05-22 20:54:44 +02:00 · 2026-05-22 18:48:11 +02:00
84 changed files with 2982 additions and 7450 deletions
@@ -1,4 +0,0 @@
-target
-build
-.git
-*.bak
@@ -1,4 +1,5 @@
-/target
-/build
-*.bak
-*.lock
+__pycache__/
+/cache
+/build*
+/sources
+/sysroot
@@ -1,24 +0,0 @@
-[package]
-name = "distro"
-version = "0.1.0"
-edition = "2024"
-license = "MIT"
-
-[dependencies]
-anyhow = "1.0"
-clap = { version = "4.5", features = ["derive"] }
-hex = "0.4"
-libc = "0.2"
-reqwest = { version = "0.12", default-features = false, features = [
-    "blocking",
-    "rustls-tls",
-] }
-serde = { version = "1.0", features = ["derive"] }
-serde_json = "1.0"
-sha2 = "0.10"
-shell-escape = "0.1"
-starlark = "0.13"
-starlark_derive = "0.13"
-allocative = "0.3"
-tempfile = "3.10"
-walkdir = "2.5"
@@ -1,46 +1,62 @@
 FROM alpine:edge

-RUN apk upgrade --no-cache && apk add --no-cache \
-    alpine-sdk \
+RUN mkdir -p /sources /build /pkgs /sysroot /dest /tools /files
+
+RUN apk add --no-cache \
    apk-tools \
-    autoconf \
-    automake \
+    build-base \
    bash \
-    bc \
-    bison \
-    bzip2 \
-    ca-certificates \
-    cmake \
-    coreutils \
-    curl \
+    patch \
+    tar \
+    xz \
+    zstd \
    file \
    findutils \
-    flex \
-    gawk \
-    gettext-dev \
-    git \
+    coreutils \
+    diffutils \
    grep \
-    gzip \
-    elfutils-dev \
+    sed \
+    gawk \
+    musl-dev \
+    linux-headers \
    gmp-dev \
    mpfr-dev \
    mpc1-dev \
+    isl-dev \
+    zlib-dev \
+    git \
+    pkgconf \
+    patchelf \
+    gperf \
+    python3 \
+    python3-dev \
+    py3-mako \
+    py3-yaml \
+    py3-packaging \
+    py3-docutils \
+    py3-passlib \
+    perl \
+    m4 \
    libtool \
-    linux-headers \
-    meson \
+    gettext-dev \
+    bison \
+    flex \
+    which \
+    ca-certificates \
+    rsync \
    mtools \
    nasm \
-    ncurses \
+    cmake \
    ninja \
-    openssl \
+    meson \
+    glslang \
+    elfutils-dev \
+    libffi-dev \
+    expat-dev \
+    libxml2-dev \
+    pcre2-dev \
    openssl-dev \
-    patch \
-    pkgconf \
-    python3 \
-    rsync \
-    tar \
-    texinfo \
-    xz \
-    zstd
+    openssl \
+    ncurses

-WORKDIR /work
+WORKDIR /build
@@ -1,18 +0,0 @@
-MIT License
-
-Copyright (c) 2026 marv7000
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of this software and 
-associated documentation files (the "Software"), to deal in the Software without restriction, including 
-without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
-copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the 
-following conditions:
-
-The above copyright notice and this permission notice shall be included in all copies or substantial 
-portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT 
-LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO 
-EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 
-USE OR OTHER DEALINGS IN THE SOFTWARE.
@@ -1,50 +0,0 @@
-container_runtime = "podman"
-container_image = "local/distro-builder:latest"
-container_dockerfile = "Dockerfile"
-
-arch = "x86_64"
-libc = "glibc"
-
-if libc == "glibc":
-    env = "gnu"
-else:
-    env = libc
-
-host_cflags = "-O2 -pipe"
-host_cxxflags = host_cflags
-host_ldflags = "-Wl,-O1 -Wl,--sort-common -Wl,--as-needed"
-
-target_cflags = host_cflags
-target_cxxflags = host_cxxflags
-target_ldflags = host_ldflags + " -Wl,-z,now"
-
-if arch == "x86_64":
-    flags = " -march=x86-64-v3 -mtune=generic -fstack-clash-protection -fstack-protector-strong -fcf-protection"
-
-    target_cflags += flags
-    target_cxxflags += flags
-    target_ldflags += " -Wl,-z,pack-relative-relocs"
-
-options = dict(
-    target_arch = arch,
-    target_triple = f"{arch}-linux-{env}",
-
-    host_cflags = host_cflags,
-    host_cxxflags = host_cxxflags,
-    host_ldflags = host_ldflags,
-
-    cflags = target_cflags,
-    cxxflags = target_cxxflags,
-    ldflags = target_ldflags,
-
-    libc = libc,
-
-    prefix = "/usr",
-    bindir = "/usr/bin",
-    sbindir = "/usr/bin",
-    libdir = "/usr/lib",
-    libexecdir = "/usr/libexec",
-    includedir = "/usr/include",
-    sysconfdir = "/etc",
-    localstatedir = "/var",
-)
@@ -0,0 +1,21 @@
+version = "2.72"
+revision = 1
+description = "GNU autoconf"
+license = "GPL-3.0-or-later"
+url = "https://www.gnu.org/software/autoconf/"
+source = tarball(
+    url=f"https://ftp.gnu.org/gnu/autoconf/autoconf-{version}.tar.xz",
+    sha256="ba885c1319578d6c94d46e9b0dceb4014caafe2490e437a0dbca3f270a223f5a",
+)
+
+
+def configure(self):
+    self.run(self.source_dir / "configure", f"--prefix={self.prefix}")
+
+
+def build(self):
+    autotools_build(self)
+
+
+def install(self):
+    autotools_install(self)
@@ -0,0 +1,22 @@
+version = "1.17"
+revision = 1
+description = "GNU automake"
+license = "GPL-2.0-or-later"
+url = "https://www.gnu.org/software/automake/"
+source = tarball(
+    url=f"https://ftp.gnu.org/gnu/automake/automake-{version}.tar.xz",
+    sha256="8920c1fc411e13b90bf704ef9db6f29d540e76d232cb3b2c9f4dc4cc599bd990",
+)
+host_deps = ["autoconf"]
+
+
+def configure(self):
+    self.run(self.source_dir / "configure", f"--prefix={self.prefix}")
+
+
+def build(self):
+    autotools_build(self)
+
+
+def install(self):
+    autotools_install(self)
@@ -0,0 +1,39 @@
+version = "2.46.0"
+revision = 1
+description = "GNU binutils cross-compiled for the target triple"
+license = "GPL-3.0-or-later"
+source = tarball(
+    url=f"https://ftp.gnu.org/gnu/binutils/binutils-{version}.tar.xz",
+    sha256="d75a94f4d73e7a4086f7513e67e439e8fcdcbb726ffe63f4661744e6256b2cf2",
+)
+
+
+def configure(self):
+    self.run(
+        self.source_dir / "configure",
+        f"--prefix={self.prefix}",
+        f"--target={self.triple}",
+        f"--with-sysroot={self.sysroot}",
+        "--with-pic",
+        "--enable-cet",
+        "--enable-default-execstack=no",
+        "--enable-deterministic-archives",
+        "--enable-ld=default",
+        "--enable-new-dtags",
+        "--enable-plugins",
+        "--enable-relro",
+        "--enable-separate-code",
+        "--enable-threads",
+        "--disable-nls",
+        "--disable-werror",
+        # gprofng's libcollector relies on glibc-specific internals.
+        "--disable-gprofng",
+        env={
+            "CFLAGS": self.profile["host_cflags"],
+            "CXXFLAGS": self.profile["host_cxxflags"],
+            "LDFLAGS": self.profile["host_ldflags"],
+        },
+    )
+
+
+_, build, install = autotools()
@@ -1,41 +0,0 @@
-version = "2.46.0"
-revision = 1
-metadata = meta(
-    description = "GNU binutils cross-compiled for the target triple",
-    license = "GPL-3.0-or-later",
-)
-source = tarball_source(
-    url = f"https://ftp.gnu.org/gnu/binutils/binutils-{version}.tar.xz",
-    sha256 = "d75a94f4d73e7a4086f7513e67e439e8fcdcbb726ffe63f4661744e6256b2cf2",
-    strip_components = 1,
-)
-
-def configure(ctx):
-    configure_args = [
-        ctx.source_dir / "configure",
-        "--prefix=/",
-        "--target=" + options.target_triple,
-        "--with-sysroot=" + ctx.sysroot,
-        "--with-pic",
-        "--enable-cet",
-        "--enable-default-execstack=no",
-        "--enable-deterministic-archives",
-        "--enable-ld=default",
-        "--enable-new-dtags",
-        "--enable-plugins",
-        "--enable-relro",
-        "--enable-separate-code",
-        "--enable-threads",
-        "--disable-nls",
-        "--disable-werror",
-        # gprofng's libcollector relies on glibc-specific internals.
-        "--disable-gprofng",
-    ]
-
-    ctx.run(configure_args, env = {
-        "CFLAGS": options.host_cflags,
-        "CXXFLAGS": options.host_cxxflags,
-        "LDFLAGS": options.host_ldflags,
-    })
-
-_, build, install = autotools()
@@ -0,0 +1,47 @@
+version = "16.1.0"
+revision = 1
+description = "GNU GCC cross-compiler (bootstrap stage, C/C++ only)"
+license = "GPL-3.0-or-later"
+source = tarball(
+    url=f"https://ftp.gnu.org/gnu/gcc/gcc-{version}/gcc-{version}.tar.xz",
+    sha256="50efb4d94c3397aff3b0d61a5abd748b4dd31d9d3f2ab7be05b171d36a510f79",
+)
+host_deps = ["binutils"]
+
+
+def configure(self):
+    self.run(
+        self.source_dir / "configure",
+        f"--target={self.triple}",
+        f"--prefix={self.prefix}",
+        f"--with-sysroot={self.sysroot}",
+        "--without-headers",
+        "--with-newlib",
+        "--enable-languages=c,c++",
+        "--enable-default-pie",
+        "--enable-default-ssp",
+        "--disable-nls",
+        "--disable-shared",
+        "--disable-threads",
+        "--disable-libssp",
+        "--disable-libgomp",
+        "--disable-libquadmath",
+        "--disable-libatomic",
+        "--disable-libvtv",
+        "--disable-multilib",
+        env={
+            "CFLAGS": self.profile["host_cflags"],
+            "CXXFLAGS": self.profile["host_cxxflags"],
+            "LDFLAGS": self.profile["host_ldflags"],
+        },
+    )
+
+
+def build(self):
+    self.run("make", f"-j{self.jobs}", "all-gcc")
+    self.run("make", f"-j{self.jobs}", "all-target-libgcc")
+
+
+def install(self):
+    self.run("make", "install-gcc", env={"DESTDIR": str(self.dest_dir)})
+    self.run("make", "install-target-libgcc", env={"DESTDIR": str(self.dest_dir)})
@@ -1,47 +0,0 @@
-version = "16.1.0"
-revision = 1
-metadata = meta(
-    description = "GNU GCC cross-compiler (bootstrap stage, C/C++ only)",
-    license = "GPL-3.0-or-later",
-)
-source = tarball_source(
-    url = f"https://ftp.gnu.org/gnu/gcc/gcc-{version}/gcc-{version}.tar.xz",
-    sha256 = "50efb4d94c3397aff3b0d61a5abd748b4dd31d9d3f2ab7be05b171d36a510f79",
-    strip_components = 1,
-)
-host_deps = ["binutils"]
-
-def configure(ctx):
-    ctx.run([
-        ctx.source_dir / "configure",
-        "--target=" + options.target_triple,
-        "--prefix=/",
-        "--with-sysroot=" + ctx.sysroot,
-        "--without-headers",
-        "--with-newlib",
-        "--enable-languages=c,c++",
-        "--enable-default-pie",
-        "--enable-default-ssp",
-        "--disable-nls",
-        "--disable-shared",
-        "--disable-threads",
-        "--disable-libssp",
-        "--disable-libgomp",
-        "--disable-libquadmath",
-        "--disable-libatomic",
-        "--disable-libvtv",
-        "--disable-multilib",
-    ], env = {
-        "CFLAGS": options.host_cflags,
-        "CXXFLAGS": options.host_cxxflags,
-        "LDFLAGS": options.host_ldflags,
-    })
-
-def build(ctx):
-    jobs = "-j" + str(ctx.jobs)
-    ctx.run(["make", jobs, "all-gcc"])
-    ctx.run(["make", jobs, "all-target-libgcc"])
-
-def install(ctx, pkg):
-    ctx.run(["make", "install-gcc"], env = {"DESTDIR": pkg.dest_dir})
-    ctx.run(["make", "install-target-libgcc"], env = {"DESTDIR": pkg.dest_dir})
@@ -0,0 +1,54 @@
+version = "16.1.0"
+revision = 1
+description = "GNU GCC cross-compiler targeting the system triple"
+license = "GPL-3.0-or-later"
+url = "https://gcc.gnu.org/"
+source = tarball(
+    url=f"https://ftp.gnu.org/gnu/gcc/gcc-{version}/gcc-{version}.tar.xz",
+    sha256="50efb4d94c3397aff3b0d61a5abd748b4dd31d9d3f2ab7be05b171d36a510f79",
+)
+host_deps = ["binutils", "gcc-bootstrap"]
+deps = [profile["libc"], "linux-headers"]
+
+
+def configure(self):
+    self.run(
+        self.source_dir / "configure",
+        f"--target={self.triple}",
+        f"--prefix={self.prefix}",
+        f"--with-sysroot={self.sysroot}",
+        f"--with-build-sysroot={self.sysroot}",
+        f"--with-gxx-include-dir={self.sysroot}{self.profile['includedir']}/c++/{version}",
+        "--enable-languages=c,c++,lto",
+        "--disable-bootstrap",
+        "--enable-default-pie",
+        "--enable-default-ssp",
+        "--enable-lto",
+        "--enable-threads=posix",
+        "--enable-tls",
+        "--enable-libstdcxx-time",
+        "--enable-checking=release",
+        "--enable-cet=auto",
+        "--enable-linker-build-id",
+        "--disable-nls",
+        "--disable-multilib",
+        "--disable-fixed-point",
+        "--disable-werror",
+        "--disable-libsanitizer",
+        "--disable-symvers",
+        env={
+            "CFLAGS": self.profile["host_cflags"],
+            "CXXFLAGS": self.profile["host_cxxflags"],
+            "LDFLAGS": self.profile["host_ldflags"],
+        },
+    )
+
+
+def build(self):
+    self.run("make", f"-j{self.jobs}")
+
+
+def install(self):
+    self.run("make", "install-strip", env={"DESTDIR": str(self.dest_dir)})
+    # Drop libtool archives.
+    self.run("find", self.dest_dir, "-name", "*.la", "-delete")
@@ -1,53 +0,0 @@
-version = "16.1.0"
-revision = 1
-metadata = meta(
-    description = "GNU GCC cross-compiler targeting the system triple",
-    license = "GPL-3.0-or-later",
-    website = "https://gcc.gnu.org/",
-)
-source = tarball_source(
-    url = f"https://ftp.gnu.org/gnu/gcc/gcc-{version}/gcc-{version}.tar.xz",
-    sha256 = "50efb4d94c3397aff3b0d61a5abd748b4dd31d9d3f2ab7be05b171d36a510f79",
-    strip_components = 1,
-)
-host_deps = ["binutils", "gcc-bootstrap"]
-deps = [options.libc, "linux-headers"]
-
-def configure(ctx):
-    ctx.run([
-        ctx.source_dir / "configure",
-        "--target=" + options.target_triple,
-        "--prefix=/",
-        "--with-sysroot=" + ctx.sysroot,
-        "--with-build-sysroot=" + ctx.sysroot,
-        "--enable-languages=c,c++,lto",
-        "--disable-bootstrap",
-        "--enable-default-pie",
-        "--enable-default-ssp",
-        "--enable-lto",
-        "--enable-threads=posix",
-        "--enable-tls",
-        "--enable-libstdcxx-time",
-        "--enable-checking=release",
-        "--enable-cet=auto",
-        "--enable-linker-build-id",
-        "--disable-nls",
-        "--disable-multilib",
-        "--disable-fixed-point",
-        "--disable-werror",
-        "--disable-libsanitizer",
-        "--disable-symvers",
-    ], env = {
-        "CFLAGS": options.host_cflags,
-        "CXXFLAGS": options.host_cxxflags,
-        "LDFLAGS": options.host_ldflags,
-    })
-
-def build(ctx):
-    ctx.run(["make", "-j" + str(ctx.jobs)])
-
-def install(ctx, pkg):
-    ctx.run(["make", "install-strip"], env = {"DESTDIR": pkg.dest_dir})
-
-    # Drop libtool archives.
-    ctx.run(["find", pkg.dest_dir, "-name", "*.la", "-delete"])
@@ -0,0 +1,56 @@
+version = "20.1.0"
+revision = 1
+description = "LLVM compiler infrastructure with clang and lld"
+license = "Apache-2.0 WITH LLVM-exception"
+url = "https://llvm.org/"
+source = tarball(
+    url=f"https://github.com/llvm/llvm-project/releases/download/llvmorg-{version}/llvm-project-{version}.src.tar.xz",
+    sha256="4579051e3c255fb4bb795d54324f5a7f3ef79bd9181e44293d7ee9a7f62aad9a",
+)
+host_deps = ["binutils"]
+
+
+def configure(self):
+    self.run(
+        "cmake",
+        "-S",
+        self.source_dir / "llvm",
+        "-B",
+        self.build_dir,
+        "-G",
+        "Ninja",
+        "-DCMAKE_BUILD_TYPE=Release",
+        f"-DCMAKE_INSTALL_PREFIX={self.prefix}",
+        "-DLLVM_ENABLE_PROJECTS=clang;clang-tools-extra;lld",
+        "-DLLVM_ENABLE_RUNTIMES=compiler-rt",
+        "-DLLVM_TARGETS_TO_BUILD=X86;AArch64;RISCV",
+        f"-DLLVM_DEFAULT_TARGET_TRIPLE={self.triple}",
+        f"-DLLVM_HOST_TRIPLE={self.triple}",
+        "-DLLVM_ENABLE_LIBXML2=OFF",
+        "-DLLVM_ENABLE_LIBEDIT=OFF",
+        "-DLLVM_ENABLE_TERMINFO=OFF",
+        "-DLLVM_ENABLE_ASSERTIONS=OFF",
+        "-DLLVM_ENABLE_PIC=ON",
+        "-DLLVM_BUILD_LLVM_DYLIB=ON",
+        "-DLLVM_LINK_LLVM_DYLIB=ON",
+        "-DLLVM_INSTALL_UTILS=ON",
+        "-DLLVM_INCLUDE_TESTS=OFF",
+        "-DLLVM_INCLUDE_EXAMPLES=OFF",
+        "-DLLVM_INCLUDE_BENCHMARKS=OFF",
+        "-DCLANG_DEFAULT_LINKER=lld",
+        "-DCLANG_DEFAULT_RTLIB=compiler-rt",
+        "-DCLANG_DEFAULT_CXX_STDLIB=libstdc++",
+        env={
+            "CFLAGS": self.profile["host_cflags"],
+            "CXXFLAGS": self.profile["host_cxxflags"],
+            "LDFLAGS": self.profile["host_ldflags"],
+        },
+    )
+
+
+def build(self):
+    self.run("cmake", "--build", self.build_dir, f"-j{self.jobs}")
+
+
+def install(self):
+    self.run("cmake", "--install", self.build_dir, env={"DESTDIR": str(self.dest_dir)})
@@ -1,52 +0,0 @@
-version = "20.1.0"
-revision = 1
-metadata = meta(
-    description = "LLVM compiler infrastructure with clang and lld",
-    license = "Apache-2.0 WITH LLVM-exception",
-    website = "https://llvm.org/",
-)
-source = tarball_source(
-    url = f"https://github.com/llvm/llvm-project/releases/download/llvmorg-{version}/llvm-project-{version}.src.tar.xz",
-    sha256 = "?",
-    strip_components = 1,
-)
-host_deps = ["binutils"]
-
-def configure(ctx):
-    ctx.run([
-        "cmake",
-        "-S", ctx.source_dir / "llvm",
-        "-B", ctx.build_dir,
-        "-G", "Ninja",
-        "-DCMAKE_BUILD_TYPE=Release",
-        "-DCMAKE_INSTALL_PREFIX=/",
-        "-DLLVM_ENABLE_PROJECTS=clang;clang-tools-extra;lld",
-        "-DLLVM_ENABLE_RUNTIMES=compiler-rt",
-        "-DLLVM_TARGETS_TO_BUILD=X86;AArch64;RISCV",
-        "-DLLVM_DEFAULT_TARGET_TRIPLE=" + options.target_triple,
-        "-DLLVM_HOST_TRIPLE=" + options.target_triple,
-        "-DLLVM_ENABLE_LIBXML2=OFF",
-        "-DLLVM_ENABLE_LIBEDIT=OFF",
-        "-DLLVM_ENABLE_TERMINFO=OFF",
-        "-DLLVM_ENABLE_ASSERTIONS=OFF",
-        "-DLLVM_ENABLE_PIC=ON",
-        "-DLLVM_BUILD_LLVM_DYLIB=ON",
-        "-DLLVM_LINK_LLVM_DYLIB=ON",
-        "-DLLVM_INSTALL_UTILS=ON",
-        "-DLLVM_INCLUDE_TESTS=OFF",
-        "-DLLVM_INCLUDE_EXAMPLES=OFF",
-        "-DLLVM_INCLUDE_BENCHMARKS=OFF",
-        "-DCLANG_DEFAULT_LINKER=lld",
-        "-DCLANG_DEFAULT_RTLIB=compiler-rt",
-        "-DCLANG_DEFAULT_CXX_STDLIB=libstdc++",
-    ], env = {
-        "CFLAGS": options.host_cflags,
-        "CXXFLAGS": options.host_cxxflags,
-        "LDFLAGS": options.host_ldflags,
-    })
-
-def build(ctx):
-    ctx.run(["cmake", "--build", ctx.build_dir, "-j" + str(ctx.jobs)])
-
-def install(ctx, pkg):
-    ctx.run(["cmake", "--install", ctx.build_dir], env = {"DESTDIR": pkg.dest_dir})
@@ -1,95 +0,0 @@
-# Autotools
-
-def autotools_configure(ctx, extra_args = [], extra_env = {}):
-    env = {
-        "CFLAGS": options.cflags,
-        "CXXFLAGS": options.cxxflags,
-        "LDFLAGS": options.ldflags,
-    }
-    env.update(extra_env)
-    ctx.run([
-        ctx.source_dir / "configure",
-        "--host=" + options.target_triple,
-        "--with-sysroot=" + ctx.sysroot,
-        "--prefix=" + options.prefix,
-        "--sysconfdir=" + options.sysconfdir,
-        "--localstatedir=" + options.localstatedir,
-        "--bindir=" + options.bindir,
-        "--sbindir=" + options.sbindir,
-        "--libdir=" + options.libdir,
-        "--disable-static",
-        "--enable-shared",
-    ] + extra_args, env = env)
-
-def autotools_build(ctx, extra_args = []):
-    ctx.run(["make", "-j" + str(ctx.jobs)] + extra_args)
-
-def autotools_install(ctx, pkg, extra_args = []):
-    ctx.run(["make", "install"] + extra_args, env = { "DESTDIR": pkg.dest_dir })
-
-def autotools(configure_args = [], configure_env = {}, build_args = [], install_args = []):
-    def _configure(ctx):
-        autotools_configure(ctx, extra_args = configure_args, extra_env = configure_env)
-    def _build(ctx):
-        autotools_build(ctx, extra_args = build_args)
-    def _install(ctx, pkg):
-        autotools_install(ctx, pkg, extra_args = install_args)
-    return _configure, _build, _install
-
-# CMake
-
-def cmake_configure(ctx, extra_args = [], extra_env = {}, host = False):
-    if host:
-        env = {
-            "CFLAGS": options.host_cflags,
-            "CXXFLAGS": options.host_cxxflags,
-            "LDFLAGS": options.host_ldflags,
-        }
-        toolchain_args = []
-    else:
-        env = {
-            "CFLAGS": options.cflags,
-            "CXXFLAGS": options.cxxflags,
-            "LDFLAGS": options.ldflags,
-        }
-        toolchain_args = [
-            "-DCMAKE_SYSTEM_NAME=Linux",
-            "-DCMAKE_SYSTEM_PROCESSOR=" + options.target_arch,
-            "-DCMAKE_SYSROOT=" + ctx.sysroot,
-            "-DCMAKE_C_COMPILER=" + options.target_triple + "-gcc",
-            "-DCMAKE_CXX_COMPILER=" + options.target_triple + "-g++",
-            "-DCMAKE_FIND_ROOT_PATH_MODE_PROGRAM=NEVER",
-            "-DCMAKE_FIND_ROOT_PATH_MODE_LIBRARY=ONLY",
-            "-DCMAKE_FIND_ROOT_PATH_MODE_INCLUDE=ONLY",
-            "-DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=ONLY",
-        ]
-    env.update(extra_env)
-    ctx.run([
-        "cmake",
-        "-S", ctx.source_dir,
-        "-B", ctx.build_dir,
-        "-G", "Ninja",
-        "-DCMAKE_BUILD_TYPE=Release",
-        "-DCMAKE_INSTALL_PREFIX=" + options.prefix,
-        "-DCMAKE_INSTALL_SYSCONFDIR=" + options.sysconfdir,
-        "-DCMAKE_INSTALL_LOCALSTATEDIR=" + options.localstatedir,
-    ] + toolchain_args + extra_args, env = env)
-
-def cmake_build(ctx, extra_args = []):
-    ctx.run(["cmake", "--build", ctx.build_dir, "-j", str(ctx.jobs)] + extra_args)
-
-def cmake_install(ctx, pkg, extra_args = []):
-    ctx.run(
-        ["cmake", "--install", ctx.build_dir] + extra_args,
-        env = {"DESTDIR": pkg.dest_dir},
-    )
-
-def cmake(configure_args = [], configure_env = {}, build_args = [], install_args = [], host = False):
-    def _configure(ctx):
-        cmake_configure(ctx, extra_args = configure_args, extra_env = configure_env, host = host)
-    def _build(ctx):
-        cmake_build(ctx, extra_args = build_args)
-    def _install(ctx, pkg):
-        cmake_install(ctx, pkg, extra_args = install_args)
-    return _configure, _build, _install
-
@@ -0,0 +1 @@
+src/__main__.py
@@ -0,0 +1,34 @@
+def profile():
+    arch = "x86_64"
+    libc = "glibc"
+    triple = f"{arch}-orchid-linux-gnu"
+
+    host_cflags = "-O2 -pipe"
+    host_cxxflags = host_cflags
+    host_ldflags = "-Wl,-O1 -Wl,--sort-common -Wl,--as-needed"
+
+    target_flags = " -march=x86-64-v3 -mtune=generic -fstack-clash-protection -fstack-protector-strong -fcf-protection"
+    cflags = host_cflags + target_flags
+    cxxflags = cflags
+    ldflags = host_ldflags + " -Wl,-z,now -Wl,-z,pack-relative-relocs"
+
+    return {
+        "arch": arch,
+        "libc": libc,
+        "triple": triple,
+        "container_image": "localhost/orchid-builder:latest",
+        "host_cflags": host_cflags,
+        "host_cxxflags": host_cxxflags,
+        "host_ldflags": host_ldflags,
+        "cflags": cflags,
+        "cxxflags": cxxflags,
+        "ldflags": ldflags,
+        "prefix": "/usr",
+        "bindir": "/usr/bin",
+        "sbindir": "/usr/bin",
+        "libdir": "/usr/lib",
+        "libexecdir": "/usr/libexec",
+        "includedir": "/usr/include",
+        "sysconfdir": "/etc",
+        "localstatedir": "/var",
+    }
@@ -0,0 +1,34 @@
+def profile():
+    arch = "x86_64"
+    libc = "musl"
+    triple = f"{arch}-orchid-linux-{libc}"
+
+    host_cflags = "-O2 -pipe"
+    host_cxxflags = host_cflags
+    host_ldflags = "-Wl,-O1 -Wl,--sort-common -Wl,--as-needed"
+
+    target_flags = " -march=x86-64-v3 -mtune=generic -fstack-clash-protection -fstack-protector-strong -fcf-protection"
+    cflags = host_cflags + target_flags
+    cxxflags = cflags
+    ldflags = host_ldflags + " -Wl,-z,now -Wl,-z,pack-relative-relocs"
+
+    return {
+        "arch": arch,
+        "libc": libc,
+        "triple": triple,
+        "container_image": "localhost/orchid-builder:latest",
+        "host_cflags": host_cflags,
+        "host_cxxflags": host_cxxflags,
+        "host_ldflags": host_ldflags,
+        "cflags": cflags,
+        "cxxflags": cxxflags,
+        "ldflags": ldflags,
+        "prefix": "/usr",
+        "bindir": "/usr/bin",
+        "sbindir": "/usr/bin",
+        "libdir": "/usr/lib",
+        "libexecdir": "/usr/libexec",
+        "includedir": "/usr/include",
+        "sysconfdir": "/etc",
+        "localstatedir": "/var",
+    }
@@ -0,0 +1,6 @@
+{
+  "ignore": [
+    "recipes",
+    "host-recipes"
+  ]
+}
@@ -0,0 +1,28 @@
+version = "5.2.32"
+revision = 1
+description = "GNU Bourne-Again SHell"
+license = "GPL-3.0-or-later"
+url = "https://www.gnu.org/software/bash/"
+source = tarball(
+    url=f"https://ftp.gnu.org/gnu/bash/bash-{version}.tar.gz",
+    sha256="d3ef80d2b67d8cbbe4d3265c63a72c46f9b278ead6e0e06d61801b58f23f50b5",
+)
+host_deps = ["autoconf", "automake", "binutils", "gcc"]
+deps = [profile["libc"], "ncurses", "readline"]
+
+build_if = False  # TODO: Doesn't build yet
+
+configure, build, install = autotools(
+    configure_args=[
+        "--without-bash-malloc",
+        "--disable-nls",
+        "--with-installed-readline",
+        "--with-curses",
+        "--enable-readline",
+        "--with-installed-readline=/sysroot/usr",  # TODO: get /sysroot from context
+    ],
+    configure_env={
+        "CFLAGS": profile["cflags"] + " -std=gnu17",
+        "CFLAGS_FOR_BUILD": profile["cflags"] + " -std=gnu17",
+    },
+)
@@ -1,22 +0,0 @@
-version = "5.2.32"
-revision = 1
-metadata = meta(
-    description = "GNU Bourne-Again SHell",
-    license = "GPL-3.0-or-later",
-    website = "https://www.gnu.org/software/bash/",
-)
-source = tarball_source(
-    url = f"https://ftp.gnu.org/gnu/bash/bash-{version}.tar.gz",
-    sha256 = "d3ef80d2b67d8cbbe4d3265c63a72c46f9b278ead6e0e06d61801b58f23f50b5",
-    strip_components = 1,
-)
-host_deps = ["binutils", "gcc"]
-deps = [options.libc, "ncurses", "readline"]
-
-configure, build, install = autotools(configure_args = [
-    "--without-bash-malloc",
-    "--with-installed-readline",
-    "--enable-readline",
-    "--enable-history",
-    "--enable-job-control",
-], configure_env = {"CFLAGS": "-std=gnu17"})
@@ -0,0 +1,20 @@
+version = "9.6"
+revision = 1
+description = "GNU core utilities (file, shell, and text manipulation)"
+license = "GPL-3.0-or-later"
+url = "https://www.gnu.org/software/coreutils/"
+source = tarball(
+    url=f"https://ftp.gnu.org/gnu/coreutils/coreutils-{version}.tar.xz",
+    sha256="7a0124327b398fd9eb1a6abde583389821422c744ffa10734b24f557610d3283",
+)
+host_deps = ["autoconf", "automake", "binutils", "gcc"]
+deps = [profile["libc"]]
+
+configure, build, install = autotools(
+    configure_args=[
+        "--enable-no-install-program=kill,uptime",
+        "--without-selinux",
+        "--without-openssl",
+    ],
+    configure_env={"FORCE_UNSAFE_CONFIGURE": "1"},
+)
@@ -1,25 +0,0 @@
-version = "9.6"
-revision = 1
-metadata = meta(
-    description = "GNU core utilities (file, shell, and text manipulation)",
-    license = "GPL-3.0-or-later",
-    website = "https://www.gnu.org/software/coreutils/",
-)
-source = tarball_source(
-    url = f"https://ftp.gnu.org/gnu/coreutils/coreutils-{version}.tar.xz",
-    sha256 = "7a0124327b398fd9eb1a6abde583389821422c744ffa10734b24f557610d3283",
-    strip_components = 1,
-)
-host_deps = ["binutils", "gcc"]
-deps = [options.libc]
-
-configure, build, install = autotools(
-    configure_args = [
-        "--enable-no-install-program=kill,uptime",
-        "--without-selinux",
-        "--without-openssl",
-    ],
-    # coreutils' configure runs link tests that require a working executable;
-    # cross builds need this hint to skip a known false positive.
-    configure_env = {"FORCE_UNSAFE_CONFIGURE": "1"},
-)
@@ -0,0 +1,38 @@
+version = "2.41"
+revision = 1
+description = "GNU C library"
+license = "LGPL-2.1-or-later"
+url = "https://www.gnu.org/software/libc/"
+source = tarball(
+    url=f"https://ftp.gnu.org/gnu/glibc/glibc-{version}.tar.xz",
+    sha256="a5a26b22f545d6b7d7b3dd828e11e428f24f4fac43c934fb071b6a7d0828e901",
+)
+host_deps = ["autoconf", "automake", "binutils", "gcc-bootstrap"]
+deps = ["linux-headers"]
+
+build_if = profile["libc"] == "glibc"
+
+
+def configure(self):
+    autotools_configure(
+        self,
+        [
+            f"--build={self.triple}",
+            f"--with-headers={self.sysroot}{self.profile['prefix']}/include",
+            "--enable-kernel=5.4",
+            "--enable-bind-now",
+            "--enable-stack-protector=strong",
+            "--enable-cet",
+            "--disable-werror",
+            "--disable-profile",
+            "--disable-nscd",
+            "--without-selinux",
+            "--without-gd",
+            "libc_cv_slibdir=/lib",
+            "libc_cv_rtlddir=/lib",
+            "libc_cv_forced_unwind=yes",
+        ],
+    )
+
+
+_, build, install = autotools()
@@ -1,36 +0,0 @@
-version = "2.41"
-revision = 1
-metadata = meta(
-    description = "GNU C library",
-    license = "LGPL-2.1-or-later",
-    website = "https://www.gnu.org/software/libc/",
-)
-source = tarball_source(
-    url = f"https://ftp.gnu.org/gnu/glibc/glibc-{version}.tar.xz",
-    sha256 = "a5a26b22f545d6b7d7b3dd828e11e428f24f4fac43c934fb071b6a7d0828e901",
-    strip_components = 1,
-)
-host_deps = ["binutils", "gcc-bootstrap"]
-deps = ["linux-headers"]
-
-build_if = options.libc == "glibc"
-
-def configure(ctx):
-    autotools_configure(ctx, [
-        "--build=" + options.target_triple,
-        "--with-headers=" + ctx.sysroot / options.prefix / "include",
-        "--enable-kernel=5.4",
-        "--enable-bind-now",
-        "--enable-stack-protector=strong",
-        "--enable-cet",
-        "--disable-werror",
-        "--disable-profile",
-        "--disable-nscd",
-        "--without-selinux",
-        "--without-gd",
-        "libc_cv_slibdir=/lib",
-        "libc_cv_rtlddir=/lib",
-        "libc_cv_forced_unwind=yes",
-    ])
-
-_, build, install = autotools()
@@ -0,0 +1,59 @@
+version = "16.1.0"
+revision = 1
+description = "GNU C++ standard library"
+license = "GPL-3.0-or-later"
+url = "https://gcc.gnu.org/"
+source = tarball(
+    url=f"https://ftp.gnu.org/gnu/gcc/gcc-{version}/gcc-{version}.tar.xz",
+    sha256="50efb4d94c3397aff3b0d61a5abd748b4dd31d9d3f2ab7be05b171d36a510f79",
+)
+host_deps = ["binutils", "gcc"]
+deps = [profile["libc"]]
+
+
+def configure(self):
+    self.run(
+        self.source_dir / "configure",
+        f"--target={self.triple}",
+        f"--prefix={self.profile['prefix']}",
+        f"--libdir={self.profile['libdir']}",
+        f"--with-sysroot={self.sysroot}",
+        f"--with-build-sysroot={self.sysroot}",
+        f"--with-gxx-include-dir={self.profile['includedir']}/c++/{version}",
+        f"--with-toolexeclibdir={self.profile['libdir']}",
+        "--enable-languages=c,c++",
+        "--disable-bootstrap",
+        "--enable-default-pie",
+        "--enable-default-ssp",
+        "--enable-lto",
+        "--enable-threads=posix",
+        "--enable-tls",
+        "--enable-libstdcxx-time",
+        "--enable-checking=release",
+        "--enable-cet=auto",
+        "--enable-linker-build-id",
+        "--disable-nls",
+        "--disable-multilib",
+        "--disable-fixed-point",
+        "--disable-werror",
+        "--disable-libsanitizer",
+        "--disable-symvers",
+        env={
+            "CFLAGS": self.profile["host_cflags"],
+            "CXXFLAGS": self.profile["host_cxxflags"],
+            "LDFLAGS": self.profile["host_ldflags"],
+        },
+    )
+
+
+def build(self):
+    self.run("make", f"-j{self.jobs}", "all-target-libstdc++-v3")
+
+
+def install(self):
+    self.run(
+        "make",
+        "install-target-libstdc++-v3",
+        env={"DESTDIR": str(self.dest_dir)},
+    )
+    self.run("find", self.dest_dir, "-name", "*.la", "-delete")
@@ -0,0 +1,50 @@
+version = "12.2.0"
+revision = 1
+description = "Modern, secure, portable, multiprotocol bootloader and boot manager"
+license = "BSD-2-Clause"
+url = "https://limine-bootloader.org"
+source = tarball(
+    url=f"https://github.com/Limine-Bootloader/Limine/releases/download/v{version}/limine-{version}.tar.gz",
+    sha256="db8a119878cfeead63c0a78236c577c40539c5759496950ea0ed32a6cf567865",
+)
+host_deps = ["autoconf", "automake", "binutils", "gcc"]
+deps = [profile["libc"]]
+
+build_if = profile["arch"] in ("x86_64", "aarch64", "riscv64", "loongarch64")
+
+_arch_args = {
+    "x86_64": [
+        "--enable-uefi-x86-64",
+        "--enable-uefi-ia32",
+        "--enable-bios",
+        "--enable-bios-cd",
+    ],
+    "aarch64": ["--enable-uefi-aarch64"],
+    "riscv64": ["--enable-uefi-riscv64"],
+    "loongarch64": ["--enable-uefi-loongarch64"],
+}
+
+configure, build, install = autotools(
+    configure_args=["--enable-uefi-cd", *_arch_args.get(profile["arch"], [])],
+    configure_env={"TOOLCHAIN_FOR_TARGET": profile["triple"] + "-"},
+)
+
+subpackages = [
+    subpackage(
+        "limine-uefi",
+        description="UEFI files",
+        files=[
+            "usr/share/limine/BOOT*.EFI",
+            "usr/share/limine/limine-uefi-*.bin",
+        ],
+    ),
+]
+
+if profile["arch"] == "x86_64":
+    subpackages.append(
+        subpackage(
+            "limine-bios",
+            description="BIOS files",
+            files=["usr/share/limine/limine-bios*"],
+        )
+    )
@@ -1,51 +0,0 @@
-version = "12.2.0"
-revision = 1
-metadata = meta(
-    description = "Modern, secure, portable, multiprotocol bootloader and boot manager",
-    license = "BSD-2-Clause",
-    website = "https://limine-bootloader.org"
-)
-source = tarball_source(
-    url = f"https://github.com/Limine-Bootloader/Limine/releases/download/v{version}/limine-{version}.tar.gz",
-    sha256 = "db8a119878cfeead63c0a78236c577c40539c5759496950ea0ed32a6cf567865",
-    strip_components = 1,
-)
-host_deps = ["binutils", "gcc"]
-deps = [options.libc]
-
-build_if = options.target_arch in ["x86_64", "aarch64", "riscv64", "loongarch64"]
-
-arch_configure_args = {
-    "x86_64": ["--enable-uefi-x86-64", "--enable-uefi-ia32", "--enable-bios", "--enable-bios-cd"],
-    "aarch64": ["--enable-uefi-aarch64"],
-    "riscv64": ["--enable-uefi-riscv64"],
-    "loongarch64": ["--enable-uefi-loongarch64"],
-}
-
-configure, build, install = autotools(
-    configure_args = ["--enable-uefi-cd"] + arch_configure_args.get(options.target_arch),
-    configure_env = {"TOOLCHAIN_FOR_TARGET": options.target_triple + "-"},
-)
-
-subpackages = [
-    subpackage(
-        "limine-uefi",
-        meta(description = "UEFI files"),
-        [
-            "usr/share/limine/BOOT*.EFI",
-            "usr/share/limine/limine-uefi-*.bin",
-        ],
-    ),
-]
-
-if options.target_arch == "x86_64":
-    subpackages += [
-        subpackage(
-            "limine-bios",
-            meta(description = "BIOS files"),
-            [
-                "usr/share/limine/limine-bios*",
-            ],
-        )
-    ]
-
@@ -0,0 +1,38 @@
+version = "7.0.9"
+revision = 2
+description = "Linux kernel headers for userspace development"
+license = "GPL-2.0-only"
+source = tarball(
+    url=f"https://cdn.kernel.org/pub/linux/kernel/v7.x/linux-{version}.tar.xz",
+    sha256="ac07acdf76cf4621cc5187a2670270a1a699533c8a6b225e4878c416ad83f1c4",
+)
+
+linux_archs = {"aarch64": "arm64"}
+
+
+def build(self):
+    # Stage the source into the (writable) build dir before invoking the kernel
+    # build system, which is not happy with a read-only source tree.
+    self.run("cp", "-rp", f"{self.source_dir}/.", self.build_dir)
+    arch = linux_archs.get(self.profile["arch"], self.profile["arch"])
+    self.run("make", "headers_install", f"ARCH={arch}")
+    self.run(
+        "find",
+        self.build_dir / "usr/include",
+        "-type",
+        "f",
+        "!",
+        "-name",
+        "*.h",
+        "-delete",
+    )
+
+
+def install(self):
+    self.run("mkdir", "-p", self.dest_dir / self.profile["prefix"].lstrip("/"))
+    self.run(
+        "cp",
+        "-rp",
+        self.build_dir / "usr/include",
+        str(self.dest_dir) + self.profile["prefix"],
+    )
@@ -1,20 +0,0 @@
-version = "7.0.9"
-revision = 1
-metadata = meta(
-    description = "Linux kernel headers for userspace development",
-    license = "GPL-2.0-only",
-)
-source = tarball_source(
-    url = f"https://cdn.kernel.org/pub/linux/kernel/v7.x/linux-{version}.tar.xz",
-    sha256 = "ac07acdf76cf4621cc5187a2670270a1a699533c8a6b225e4878c416ad83f1c4",
-    strip_components = 1,
-)
-
-def build(ctx):
-    ctx.run(["cp", "-rp", ctx.source_dir / ".", ctx.build_dir])
-    ctx.run(["make", "headers_install", "ARCH=" + options.target_arch])
-    ctx.run(["find", ctx.build_dir / "usr/include", "-type", "f", "!", "-name", "*.h", "-delete"])
-
-def install(ctx, pkg):
-    ctx.run(["mkdir", "-p", pkg.dest_dir / options.prefix])
-    ctx.run(["cp", "-rp", ctx.build_dir / "usr/include", pkg.dest_dir / options.prefix])
@@ -0,0 +1,48 @@
+version = "7.0.9"
+revision = 2
+description = "Linux kernel"
+license = "GPL-2.0-only"
+source = tarball(
+    url=f"https://cdn.kernel.org/pub/linux/kernel/v7.x/linux-{version}.tar.xz",
+    sha256="ac07acdf76cf4621cc5187a2670270a1a699533c8a6b225e4878c416ad83f1c4",
+)
+host_deps = ["binutils", "gcc"]
+deps = [profile["libc"]]
+
+linux_archs = {"aarch64": "arm64"}
+linux_subarchs = {"x86_64": "x86"}
+
+
+def _make(self, *extra):
+    arch = linux_archs.get(self.profile["arch"], self.profile["arch"])
+    subarch = linux_subarchs.get(self.profile["arch"])
+    subarch_arg = (f"SUBARCH={subarch}",) if subarch else ()
+    return (
+        "make",
+        f"ARCH={arch}",
+        *subarch_arg,
+        f"CROSS_COMPILE={self.triple}-",
+        f"-j{self.jobs}",
+        *extra,
+    )
+
+
+def configure(self):
+    self.run("cp", "-rp", f"{self.source_dir}/.", self.build_dir)
+    self.run(
+        "cp", self.files / f"config.{self.profile['arch']}", self.build_dir / ".config"
+    )
+    self.run(*_make(self, "olddefconfig"))
+
+
+def build(self):
+    self.run(*_make(self))
+
+
+def install(self):
+    self.run(
+        "install",
+        "-Dm644",
+        self.build_dir / "arch/x86/boot/bzImage",
+        self.dest_dir / f"boot/vmlinuz-{self.version}",
+    )
@@ -1,44 +0,0 @@
-version = "7.0.9"
-revision = 1
-metadata = meta(
-    description = "Linux kernel",
-    license = "GPL-2.0-only",
-)
-
-source = tarball_source(
-    url = f"https://cdn.kernel.org/pub/linux/kernel/v7.x/linux-{version}.tar.xz",
-    sha256 = "ac07acdf76cf4621cc5187a2670270a1a699533c8a6b225e4878c416ad83f1c4",
-    strip_components = 1,
-)
-
-host_deps = ["binutils", "gcc"]
-
-def make_args(ctx, *args):
-    # Translate arch name
-    if options.target_arch == "aarch64":
-        linux_arch = "arm64"
-    else:
-        linux_arch = options.target_arch
-
-    result = [
-        "make",
-        "ARCH=" + linux_arch,
-        "CROSS_COMPILE=" + options.target_triple + "-",
-        "-j" + str(ctx.jobs),
-    ]
-    result.extend(args)
-    return result
-
-def configure(ctx):
-    ctx.run(["cp", "-rp", ctx.source_dir / ".", ctx.build_dir])
-    ctx.run(["cp", ctx.files / "config." + options.target_arch, ctx.build_dir / ".config"])
-    ctx.run(make_args(ctx, "olddefconfig"))
-
-def build(ctx):
-    ctx.run(make_args(ctx))
-
-def install(ctx, pkg):
-    ctx.install(
-        ctx.build_dir + "/arch/x86/boot/bzImage",
-        pkg.destdir + "/boot/vmlinuz-" + version,
-    )
@@ -0,0 +1,13 @@
+version = "4.4.1"
+revision = 1
+description = "GNU make build automation tool"
+license = "GPL-3.0-or-later"
+url = "https://www.gnu.org/software/make/"
+source = tarball(
+    url=f"https://ftp.gnu.org/gnu/make/make-{version}.tar.gz",
+    sha256="dd16fb1d67bfab79a72f5e8390735c49e3e8e70b4945a15ab1f81ddb78658fb3",
+)
+host_deps = ["autoconf", "automake", "binutils", "gcc"]
+deps = [profile["libc"]]
+
+configure, build, install = autotools(configure_args=["--without-guile"])
@@ -1,18 +0,0 @@
-version = "4.4.1"
-revision = 1
-metadata = meta(
-    description = "GNU make build automation tool",
-    license = "GPL-3.0-or-later",
-    website = "https://www.gnu.org/software/make/",
-)
-source = tarball_source(
-    url = f"https://ftp.gnu.org/gnu/make/make-{version}.tar.gz",
-    sha256 = "dd16fb1d67bfab79a72f5e8390735c49e3e8e70b4945a15ab1f81ddb78658fb3",
-    strip_components = 1,
-)
-host_deps = ["binutils", "gcc"]
-deps = [options.libc]
-
-configure, build, install = autotools(configure_args = [
-    "--without-guile",
-])
@@ -0,0 +1,28 @@
+version = "1.2.6"
+revision = 1
+description = "Small, standards-conformant implementation of libc"
+license = "MIT"
+source = tarball(
+    url=f"https://musl.libc.org/releases/musl-{version}.tar.gz",
+    sha256="d585fd3b613c66151fc3249e8ed44f77020cb5e6c1e635a616d3f9f82460512a",
+)
+host_deps = ["binutils", "gcc-bootstrap"]
+
+build_if = profile["libc"] == "musl"
+
+
+def configure(self):
+    self.run(
+        self.source_dir / "configure",
+        f"--target={self.triple}",
+        f"--prefix={self.profile['prefix']}",
+        "--syslibdir=/lib",
+        env={
+            "CC": f"{self.triple}-gcc",
+            "CFLAGS": self.profile["cflags"],
+            "LDFLAGS": self.profile["ldflags"],
+        },
+    )
+
+
+_, build, install = autotools()
@@ -1,27 +0,0 @@
-version = "1.2.6"
-revision = 1
-metadata = meta(
-    description = "Small, standards-conformant implementation of libc",
-    license = "MIT",
-)
-source = tarball_source(
-    url = f"https://musl.libc.org/releases/musl-{version}.tar.gz",
-    sha256 = "d585fd3b613c66151fc3249e8ed44f77020cb5e6c1e635a616d3f9f82460512a",
-    strip_components = 1,
-)
-host_deps = ["binutils", "gcc-bootstrap"]
-build_if = options.libc == "musl"
-
-def configure(ctx):
-    ctx.run([
-        ctx.source_dir / "configure",
-        "--target=" + options.target_triple,
-        "--prefix=" + options.prefix,
-        "--syslibdir=/lib",
-    ], env = {
-        "CC": options.target_triple + "-gcc",
-        "CFLAGS": options.cflags,
-        "LDFLAGS": options.ldflags,
-    })
-
-_, build, install = autotools()
@@ -0,0 +1,39 @@
+version = "6.5"
+revision = 1
+description = "Terminal control library with wide-character support"
+license = "MIT"
+url = "https://invisible-island.net/ncurses/"
+source = tarball(
+    url=f"https://invisible-mirror.net/archives/ncurses/ncurses-{version}.tar.gz",
+    sha256="136d91bc269a9a5785e5f9e980bc76ab57428f604ce3e5a5a90cebc767971cc6",
+)
+host_deps = ["autoconf", "automake", "binutils", "gcc"]
+deps = [profile["libc"], "libstdc++"]
+
+configure, build, _ = autotools(
+    configure_args=[
+        "--with-shared",
+        "--without-debug",
+        "--without-ada",
+        "--enable-pc-files",
+        "--enable-widec",
+        "--with-termlib",
+        "--with-cxx-binding",
+        "--with-cxx-shared",
+        "--with-pkg-config-libdir=/usr/lib/pkgconfig",
+        "--with-tic-path=/usr/bin/tic",
+        "--with-infocmp-path=/usr/bin/infocmp",
+        "--mandir=/usr/share/man",
+    ],
+    configure_env={
+        # Conflicts with GCC 16 headers.
+        "cf_cv_type_of_bool": "bool",
+        "cf_cv_cc_bool_type": "1",
+        "cf_cv_builtin_bool": "1",
+        "ac_cv_header_stdbool_h": "yes",
+    },
+)
+
+
+def install(self):
+    autotools_install(self, [f"DESTDIR={self.dest_dir}"])
@@ -1,38 +0,0 @@
-version = "6.5"
-revision = 1
-metadata = meta(
-    description = "Terminal control library with wide-character support",
-    license = "MIT",
-    website = "https://invisible-island.net/ncurses/",
-)
-source = tarball_source(
-    url = f"https://invisible-mirror.net/archives/ncurses/ncurses-{version}.tar.gz",
-    sha256 = "136d91bc269a9a5785e5f9e980bc76ab57428f604ce3e5a5a90cebc767971cc6",
-    strip_components = 1,
-)
-host_deps = ["binutils", "gcc"]
-deps = [options.libc]
-
-configure, build, _ = autotools(configure_args = [
-    "--with-shared",
-    "--without-debug",
-    "--without-ada",
-    "--enable-pc-files",
-    "--enable-widec",
-    "--with-termlib",
-    "--with-cxx-binding",
-    "--with-cxx-shared",
-    "--with-pkg-config-libdir=/usr/lib/pkgconfig",
-    "--mandir=/usr/share/man",
-], configure_env = {
-    # Conflicts with GCC 16 headers
-    "cf_cv_type_of_bool": "bool",
-    "cf_cv_cc_bool_type": "1",
-    "cf_cv_builtin_bool": "1",
-    "ac_cv_header_stdbool_h": "yes",
-})
-
-def install(ctx, pkg):
-    autotools_install(ctx, pkg, extra_args = [
-        "DESTDIR=" + pkg.dest_dir
-    ])
@@ -0,0 +1,53 @@
+version = "3.4.1"
+revision = 1
+description = "Cryptography and TLS library (OpenSSL)"
+license = "Apache-2.0"
+url = "https://www.openssl.org/"
+source = tarball(
+    url=f"https://github.com/openssl/openssl/releases/download/openssl-{version}/openssl-{version}.tar.gz",
+    sha256="?",
+)
+host_deps = ["binutils", "gcc"]
+deps = ["zlib"]
+
+ossl_targets = {
+    "x86_64": "linux-x86_64",
+    "aarch64": "linux-aarch64",
+    "riscv64": "linux64-riscv64",
+}
+
+
+def configure(self):
+    target = ossl_targets.get(self.profile["arch"])
+    if target is None:
+        raise ValueError(f"openssl: unsupported arch {self.profile['arch']}")
+
+    self.run(
+        self.source_dir / "Configure",
+        target,
+        f"--prefix={self.profile['prefix']}",
+        "--openssldir=/etc/ssl",
+        "--libdir=lib",
+        "shared",
+        "zlib",
+        "no-tests",
+        "no-static-engine",
+        "enable-ktls",
+        env={
+            "CC": f"{self.triple}-gcc",
+            "AR": f"{self.triple}-ar",
+            "RANLIB": f"{self.triple}-ranlib",
+            "CFLAGS": self.profile["cflags"],
+            "LDFLAGS": self.profile["ldflags"],
+        },
+    )
+
+
+def build(self):
+    self.run("make", f"-j{self.jobs}")
+
+
+def install(self):
+    self.run(
+        "make", "install_sw", "install_ssldirs", env={"DESTDIR": str(self.dest_dir)}
+    )
@@ -1,51 +0,0 @@
-version = "3.4.1"
-revision = 1
-metadata = meta(
-    description = "Cryptography and TLS library (OpenSSL)",
-    license = "Apache-2.0",
-    website = "https://www.openssl.org/",
-)
-source = tarball_source(
-    url = f"https://github.com/openssl/openssl/releases/download/openssl-{version}/openssl-{version}.tar.gz",
-    sha256 = "?",
-    strip_components = 1,
-)
-host_deps = ["binutils", "gcc"]
-deps = ["zlib"]
-
-def configure(ctx):
-    # OpenSSL uses its own perl-based Configure script. The first argument is
-    # the OpenSSL "target" — pick the one matching our triple.
-    if options.target_arch == "x86_64":
-        ossl_target = "linux-x86_64"
-    elif options.target_arch == "aarch64":
-        ossl_target = "linux-aarch64"
-    elif options.target_arch == "riscv64":
-        ossl_target = "linux64-riscv64"
-    else:
-        fail("openssl: unsupported target_arch " + options.target_arch)
-
-    ctx.run([
-        ctx.source_dir / "Configure",
-        ossl_target,
-        "--prefix=" + options.prefix,
-        "--openssldir=/etc/ssl",
-        "--libdir=lib",
-        "shared",
-        "zlib",
-        "no-tests",
-        "no-static-engine",
-        "enable-ktls",
-    ], env = {
-        "CC": options.target_triple + "-gcc",
-        "AR": options.target_triple + "-ar",
-        "RANLIB": options.target_triple + "-ranlib",
-        "CFLAGS": options.cflags,
-        "LDFLAGS": options.ldflags,
-    })
-
-def build(ctx):
-    ctx.run(["make", "-j" + str(ctx.jobs)])
-
-def install(ctx, pkg):
-    ctx.run(["make", "install_sw", "install_ssldirs"], env = {"DESTDIR": pkg.dest_dir})
@@ -0,0 +1,18 @@
+version = "3.3.3"
+revision = 1
+description = "Lightweight pkg-config implementation"
+license = "ISC"
+url = "http://pkgconf.org/"
+source = tarball(
+    url=f"https://distfiles.ariadne.space/pkgconf/pkgconf-{version}.tar.xz",
+    sha256="?",
+)
+host_deps = ["autoconf", "automake", "binutils", "gcc"]
+deps = [profile["libc"]]
+
+configure, build, install = autotools(
+    configure_args=[
+        f"--with-system-libdir={profile['libdir']}",
+        f"--with-system-includedir={profile['includedir']}",
+    ]
+)
@@ -1,19 +0,0 @@
-version = "3.3.3"
-revision = 1
-metadata = meta(
-    description = "Lightweight pkg-config implementation",
-    license = "ISC",
-    website = "http://pkgconf.org/",
-)
-source = tarball_source(
-    url = f"https://distfiles.ariadne.space/pkgconf/pkgconf-{version}.tar.xz",
-    sha256 = "?",
-    strip_components = 1,
-)
-host_deps = ["binutils", "gcc"]
-deps = [options.libc]
-
-configure, build, install = autotools(configure_args = [
-    "--with-system-libdir=" + options.libdir,
-    "--with-system-includedir=" + options.includedir,
-])
@@ -0,0 +1,22 @@
+version = "8.2"
+revision = 1
+description = "Library for command-line editing"
+license = "GPL-3.0-or-later"
+url = "https://tiswww.case.edu/php/chet/readline/rltop.html"
+source = tarball(
+    url=f"https://ftp.gnu.org/gnu/readline/readline-{version}.tar.gz",
+    sha256="3feb7171f16a84ee82ca18a36d7b9be109a52c04f492a053331d7d1095007c35",
+)
+host_deps = ["autoconf", "automake", "binutils", "gcc"]
+deps = [profile["libc"], "ncurses"]
+
+configure, build, _ = autotools(
+    configure_args=["--with-curses"],
+    # Force linking against system ncurses, not readline's internal termcap stub.
+    configure_env={"bash_cv_termcap_lib": "ncursesw"},
+)
+
+
+def install(self):
+    # readline overwrites DESTDIR on its own; pass explicitly.
+    autotools_install(self, [f"DESTDIR={self.dest_dir}"])
@@ -1,29 +0,0 @@
-version = "8.2"
-revision = 1
-metadata = meta(
-    description = "Library for command-line editing",
-    license = "GPL-3.0-or-later",
-    website = "https://tiswww.case.edu/php/chet/readline/rltop.html",
-)
-source = tarball_source(
-    url = f"https://ftp.gnu.org/gnu/readline/readline-{version}.tar.gz",
-    sha256 = "3feb7171f16a84ee82ca18a36d7b9be109a52c04f492a053331d7d1095007c35",
-    strip_components = 1,
-)
-host_deps = ["binutils", "gcc"]
-deps = [options.libc, "ncurses"]
-
-configure, build, _ = autotools(
-    configure_args = ["--with-curses"],
-    configure_env = {
-        # Force linking against the system curses; otherwise readline's
-        # configure may pick a static libtermcap stub it ships internally.
-        "bash_cv_termcap_lib": "ncursesw",
-    },
-)
-
-# Readline overwrites DESTDIR
-def install(ctx, pkg):
-    autotools_install(ctx, pkg, extra_args = [
-        "DESTDIR=" + pkg.dest_dir
-    ])
@@ -0,0 +1,13 @@
+version = "5.6.3"
+revision = 1
+description = "LZMA/XZ compression tools and library"
+license = "0BSD AND GPL-2.0-or-later AND LGPL-2.1-or-later"
+url = "https://tukaani.org/xz/"
+source = tarball(
+    url=f"https://github.com/tukaani-project/xz/releases/download/v{version}/xz-{version}.tar.xz",
+    sha256="db0590629b6f0fa36e74aea5f9731dc6f8df068ce7b7bafa45301832a5eebc3a",
+)
+host_deps = ["autoconf", "automake", "binutils", "gcc"]
+deps = [profile["libc"]]
+
+configure, build, install = autotools(configure_args=["--disable-doc"])
@@ -1,18 +0,0 @@
-version = "5.6.3"
-revision = 1
-metadata = meta(
-    description = "XZ Utils — LZMA/XZ compression tools and library",
-    license = "0BSD AND GPL-2.0-or-later AND LGPL-2.1-or-later",
-    website = "https://tukaani.org/xz/",
-)
-source = tarball_source(
-    url = f"https://github.com/tukaani-project/xz/releases/download/v{version}/xz-{version}.tar.xz",
-    sha256 = "db0590629b6f0fa36e74aea5f9731dc6f8df068ce7b7bafa45301832a5eebc3a",
-    strip_components = 1,
-)
-host_deps = ["binutils", "gcc"]
-deps = [options.libc]
-
-configure, build, install = autotools(configure_args = [
-    "--disable-doc",
-])
@@ -0,0 +1,36 @@
+version = "1.3.2"
+revision = 1
+description = "Lossless data-compression library"
+license = "Zlib"
+url = "https://zlib.net/"
+source = tarball(
+    url=f"https://github.com/madler/zlib/releases/download/v{version}/zlib-{version}.tar.gz",
+    sha256="?",
+)
+host_deps = ["binutils", "gcc"]
+deps = [profile["libc"]]
+
+
+def configure(self):
+    # zlib ships its own ./configure; doesn't grok autoconf flags.
+    self.run(
+        self.source_dir / "configure",
+        f"--prefix={self.profile['prefix']}",
+        f"--libdir={self.profile['libdir']}",
+        f"--sharedlibdir={self.profile['libdir']}",
+        env={
+            "CC": f"{self.triple}-gcc",
+            "AR": f"{self.triple}-ar",
+            "RANLIB": f"{self.triple}-ranlib",
+            "CFLAGS": self.profile["cflags"],
+            "LDFLAGS": self.profile["ldflags"],
+        },
+    )
+
+
+def build(self):
+    self.run("make", f"-j{self.jobs}")
+
+
+def install(self):
+    self.run("make", "install", env={"DESTDIR": str(self.dest_dir)})
@@ -1,36 +0,0 @@
-version = "1.3.2"
-revision = 1
-metadata = meta(
-    description = "Lossless data-compression library",
-    license = "Zlib",
-    website = "https://zlib.net/",
-)
-source = tarball_source(
-    url = f"https://zlib.net/zlib-{version}.tar.xz",
-    sha256 = "d7a0654783a4da529d1bb793b7ad9c3318020af77667bcae35f95d0e42a792f3",
-    strip_components = 1,
-)
-host_deps = ["binutils", "gcc"]
-deps = [options.libc]
-
-def configure(ctx):
-    # zlib ships its own ./configure that does not understand the usual
-    # autoconf flags (no --host, --build, etc.), so it is invoked directly.
-    ctx.run([
-        ctx.source_dir / "configure",
-        "--prefix=" + options.prefix,
-        "--libdir=" + options.libdir,
-        "--sharedlibdir=" + options.libdir,
-    ], env = {
-        "CC": options.target_triple + "-gcc",
-        "AR": options.target_triple + "-ar",
-        "RANLIB": options.target_triple + "-ranlib",
-        "CFLAGS": options.cflags,
-        "LDFLAGS": options.ldflags,
-    })
-
-def build(ctx):
-    ctx.run(["make", "-j" + str(ctx.jobs)])
-
-def install(ctx, pkg):
-    ctx.run(["make", "install"], env = {"DESTDIR": pkg.dest_dir})
@@ -0,0 +1,3 @@
+"""Orchid build system"""
+
+__version__ = "0.1.0"
@@ -0,0 +1,12 @@
+#!/usr/bin/python3
+import os
+import sys
+
+_HERE = os.path.dirname(os.path.realpath(__file__))
+_ROOT = os.path.dirname(_HERE)
+if _ROOT not in sys.path:
+    sys.path.insert(0, _ROOT)
+
+from src.cli import main
+
+raise SystemExit(main())
@@ -0,0 +1,135 @@
+from src.container import Container
+from src.recipe import Recipe
+from src.source import Subpackage
+
+
+def _info_args(
+    name: str,
+    version: str,
+    revision: int,
+    arch: str,
+    origin: str,
+    description: str,
+    license: str,
+    url: str,
+    maintainer: str,
+    depends: list[str],
+) -> list[str]:
+    args = [
+        "--info",
+        f"name:{name}",
+        "--info",
+        f"version:{version}-r{revision}",
+        "--info",
+        f"arch:{arch}",
+        "--info",
+        f"origin:{origin}",
+    ]
+    if description:
+        args += ["--info", f"description:{description}"]
+    if license:
+        args += ["--info", f"license:{license}"]
+    if url:
+        args += ["--info", f"url:{url}"]
+    if maintainer:
+        args += ["--info", f"packager:{maintainer}"]
+    for d in depends:
+        args += ["--info", f"depends:{d}"]
+    return args
+
+
+def mkpkg_base(container: Container, recipe: Recipe, arch: str) -> None:
+    name = recipe.name
+    deps = list(recipe.deps) + list(recipe.run_deps)
+    args = [
+        "apk",
+        "mkpkg",
+        "--files",
+        f"/dest/{name}",
+        "--output",
+        f"/pkgs/{name}-{recipe.version}-r{recipe.revision}.apk",
+        *_info_args(
+            name,
+            recipe.version,
+            recipe.revision,
+            arch,
+            recipe.name,
+            recipe.description,
+            recipe.license,
+            recipe.url,
+            recipe.maintainer,
+            deps,
+        ),
+    ]
+    container.exec(args)
+
+
+def mkpkg_subpackage(
+    container: Container, recipe: Recipe, sub: Subpackage, arch: str
+) -> None:
+    args = [
+        "apk",
+        "mkpkg",
+        "--files",
+        f"/dest/{sub.name}",
+        "--output",
+        f"/pkgs/{sub.name}-{recipe.version}-r{recipe.revision}.apk",
+        *_info_args(
+            sub.name,
+            recipe.version,
+            recipe.revision,
+            arch,
+            recipe.name,
+            sub.description,
+            sub.license,
+            sub.url,
+            sub.maintainer,
+            [recipe.name],
+        ),
+    ]
+    container.exec(args)
+
+
+def index(container: Container) -> None:
+    container.exec_shell(
+        "apk mkndx --allow-untrusted -o /pkgs/Packages.adb /pkgs/*.apk"
+    )
+
+
+def sysroot_install(container: Container, pkgs: list[str], *, initdb: bool) -> None:
+    if not pkgs:
+        return
+    args = [
+        "apk",
+        "add",
+        "--root",
+        "/sysroot",
+        "--allow-untrusted",
+        "--no-network",
+        "--repository",
+        "/pkgs/Packages.adb",
+    ]
+    if initdb:
+        args.append("--initdb")
+    args += pkgs
+    container.exec(args)
+
+
+def sysroot_initialized(container: Container) -> bool:
+    rc = container.exec(["test", "-f", "/sysroot/lib/apk/db/installed"], check=False)
+    return rc == 0
+
+
+def split_subpackage_script(base: str, dest: str, pattern: str) -> str:
+    # Move matching files from /dest/<base> to /dest/<dest>, preserving dirs.
+    # TODO: Make this cleaner.
+    return (
+        f"set -e; "
+        f"cd /dest/{base}; "
+        f"find . -depth -path './{pattern}' -print 2>/dev/null | while IFS= read -r f; do "
+        f'  rel="${{f#./}}"; '
+        f'  target=/dest/{dest}/"$rel"; '
+        f'  mkdir -p "$(dirname "$target")"; '
+        f'  mv "$f" "$target"; '
+        f"done"
+    )
@@ -0,0 +1,283 @@
+import os
+import re
+import shutil
+from pathlib import Path
+
+from src import apk, fetch, log
+from src.container import Container, Mount
+from src.context import RecipeContext
+from src.layout import Layout
+from src.plan import (
+    PHASE_STAMPS,
+    Plan,
+    stamp_dir,
+    stamp_token,
+    stamp_valid,
+    transitive_host_deps,
+)
+from src.recipe import Recipe, RecipeSet
+
+
+def _container_name(*parts: str) -> str:
+    name = "-".join(parts)
+    name = re.sub(
+        r"[^a-zA-Z0-9_.-]",
+        lambda m: f"_{ord(m.group(0)):02x}",
+        name,
+    )
+    if not name or not name[0].isalnum():
+        name = f"orchid-{name}"
+    return name
+
+
+def _source_tree(layout: Layout, r: Recipe, key: str | None) -> Path:
+    base = layout.source_tree(r.name, r.version)
+    if len(r.sources) == 1:
+        return base
+    if key is None:
+        raise ValueError(f"{r.name}: multi-source entries must be named")
+    return base / key
+
+
+def _prepare_all_sources(layout: Layout, r: Recipe) -> None:
+    for key, src in r.sources.items():
+        tree = _source_tree(layout, r, key)
+        tree.parent.mkdir(parents=True, exist_ok=True)
+        fetch.prepare_source(layout, r.dir, src, tree)
+
+
+def _build_path_env(host_deps_order: list[str], layout: Layout) -> str:
+    parts: list[str] = []
+    for h in reversed(host_deps_order):
+        parts += [
+            f"/tools/{h}/sbin",
+            f"/tools/{h}/bin",
+        ]
+    parts += [
+        "/usr/local/sbin",
+        "/usr/local/bin",
+        "/usr/sbin",
+        "/usr/bin",
+        "/sbin",
+        "/bin",
+    ]
+    return ":".join(parts)
+
+
+def _container_for(
+    rs: RecipeSet, layout: Layout, profile: dict, r: Recipe
+) -> tuple[Container, list[str]]:
+    host_order = transitive_host_deps(rs, r)
+    name = _container_name("orchid", layout.build.name, r.kind, r.name)
+
+    mounts: list[Mount] = []
+    tmpfs: list[str] = ["/sysroot"]
+    # sources
+    if len(r.sources) == 1:
+        key = next(iter(r.sources.keys()))
+        mounts.append(Mount(_source_tree(layout, r, key), "/sources", readonly=True))
+    else:
+        for k in r.sources.keys():
+            mounts.append(
+                Mount(_source_tree(layout, r, k), f"/sources/{k}", readonly=True)
+            )
+    # build dir
+    wd = layout.build_workdir(r.name if r.kind == "target" else f"host-{r.name}")
+    wd.mkdir(parents=True, exist_ok=True)
+    mounts.append(Mount(wd, "/build", readonly=False))
+    # files dir
+    if r.files_dir is not None:
+        mounts.append(Mount(r.files_dir, "/files", readonly=True))
+    # tools
+    for h in host_order:
+        mounts.append(Mount(layout.host_pkg_dir(h), f"/tools/{h}", readonly=True))
+    # pkgs (produced packages persist on disk); sysroot lives in tmpfs
+    mounts.append(Mount(layout.pkgs_dir, "/pkgs", readonly=False))
+
+    env = {
+        "PATH": _build_path_env(host_order, layout),
+        "ORCHID_ARCH": profile["arch"],
+        "ORCHID_TRIPLE": profile["triple"],
+        "ORCHID_JOBS": str(os.cpu_count() or 1),
+    }
+    c = Container(
+        name=name,
+        image=profile["container_image"],
+        mounts=mounts,
+        tmpfs=tmpfs,
+        network=False,
+        extra_env=env,
+    )
+    return c, host_order
+
+
+def _recipe_ref(r: Recipe) -> str:
+    return f"{r.key} ({r.version}-r{r.revision})"
+
+
+def _mark_stamp(layout: Layout, r: Recipe, phase: str) -> None:
+    name = PHASE_STAMPS.get(phase)
+    if name is None:
+        return
+    d = stamp_dir(layout, r)
+    d.mkdir(parents=True, exist_ok=True)
+    (d / name).write_text(stamp_token(r))
+
+
+def _clear_stamps(layout: Layout, r: Recipe) -> None:
+    d = stamp_dir(layout, r)
+    if d.is_dir():
+        shutil.rmtree(d)
+
+
+def _wipe_workdir(layout: Layout, r: Recipe) -> None:
+    wd = layout.build_workdir(r.name if r.kind == "target" else f"host-{r.name}")
+    if wd.is_dir():
+        shutil.rmtree(wd)
+
+
+def _run_phases(ctx: RecipeContext, r: Recipe, layout: Layout) -> None:
+    for phase in ("prepare", "configure", "build"):
+        fn = r.phases.get(phase)
+        if fn is None:
+            continue
+        if stamp_valid(layout, r, phase):
+            log.info_field(phase, f"{_recipe_ref(r)} (cached)")
+            continue
+        log.info_field(phase, _recipe_ref(r))
+        fn(ctx)
+        _mark_stamp(layout, r, phase)
+
+
+def _do_install(ctx: RecipeContext, r: Recipe) -> None:
+    fn = r.phases.get("install")
+    if fn is None:
+        return
+    log.info_field("install", _recipe_ref(r))
+    ctx._dest_output = r.name
+    try:
+        fn(ctx)
+    finally:
+        ctx._dest_output = None
+
+
+def _split_subpackages(c: Container, r: Recipe) -> None:
+    for sub in r.subpackages:
+        c.exec(["mkdir", "-p", f"/dest/{sub.name}"])
+        for pat in sub.files:
+            c.exec_shell(apk.split_subpackage_script(r.name, sub.name, pat))
+
+
+def _package_target(c: Container, r: Recipe, arch: str) -> None:
+    apk.mkpkg_base(c, r, arch)
+    for sub in r.subpackages:
+        apk.mkpkg_subpackage(c, r, sub, arch)
+    apk.index(c)
+
+
+def _finalize_host(c: Container, layout: Layout, r: Recipe) -> None:
+    import subprocess
+
+    out = layout.host_pkg_dir(r.name)
+    if out.exists():
+        shutil.rmtree(out)
+    out.mkdir(parents=True)
+    p1 = subprocess.Popen(
+        [
+            "podman",
+            "exec",
+            c.name,
+            "sh",
+            "-c",
+            f"cd /dest/{r.name}/tools/{r.name} && tar -cf - .",
+        ],
+        stdout=subprocess.PIPE,
+    )
+    p2 = subprocess.Popen(["tar", "-xf", "-", "-C", str(out)], stdin=p1.stdout)
+    if p1.stdout is not None:
+        p1.stdout.close()
+    rc = p2.wait()
+    p1.wait()
+    if rc != 0 or p1.returncode != 0:
+        raise RuntimeError(f"host {r.name}: copy-out failed")
+    layout.host_pkg_marker(r.name, r.version, r.revision).write_text("ok\n")
+
+
+def _sysroot_sync(c: Container, r: Recipe) -> None:
+    direct_deps = list(r.deps)
+    if not direct_deps:
+        return
+    initdb = not apk.sysroot_initialized(c)
+    apk.sysroot_install(c, direct_deps, initdb=initdb)
+
+
+def build_one(
+    rs: RecipeSet, layout: Layout, profile: dict, r: Recipe, *, forced: bool = False
+) -> None:
+    log.info_field("recipe", _recipe_ref(r))
+    if forced:
+        _clear_stamps(layout, r)
+        _wipe_workdir(layout, r)
+    _prepare_all_sources(layout, r)
+
+    c, _host_order = _container_for(rs, layout, profile, r)
+    c.start()
+    try:
+        # Ensure base output dest dir exists.
+        c.exec(["mkdir", "-p", f"/dest/{r.name}"])
+
+        _sysroot_sync(c, r)
+
+        ctx = RecipeContext(
+            recipe=r, profile=profile, container=c, jobs=os.cpu_count() or 1
+        )
+        _run_phases(ctx, r, layout)
+        _do_install(ctx, r)
+
+        if r.kind == "target":
+            log.info_field("package", _recipe_ref(r))
+            _split_subpackages(c, r)
+            _package_target(c, r, profile["arch"])
+        else:
+            log.info_field("finalize", _recipe_ref(r))
+            _finalize_host(c, layout, r)
+    finally:
+        c.stop()
+    log.ok_field("done", _recipe_ref(r))
+
+
+def execute(plan: Plan, rs: RecipeSet, layout: Layout, profile: dict) -> None:
+    if not plan.order:
+        log.info_field("plan", "nothing to do")
+        return
+    for k in plan.order:
+        r = plan.recipes[k]
+        build_one(rs, layout, profile, r, forced=k in plan.forced)
+
+
+def install_to(
+    layout: Layout,
+    profile: dict,
+    dest: Path,
+    pkgs: list[str],
+    *,
+    initdb: bool = True,
+) -> None:
+    if not pkgs:
+        log.info_field("install", "nothing to install")
+        return
+    c = Container(
+        name=_container_name("orchid", layout.build.name, "install"),
+        image=profile["container_image"],
+        mounts=[
+            Mount(layout.pkgs_dir, "/pkgs", readonly=True),
+            Mount(dest, "/sysroot", readonly=False),
+        ],
+        network=False,
+    )
+    c.start()
+    try:
+        log.info_field("install", f"{dest}: {', '.join(pkgs)}")
+        apk.sysroot_install(c, pkgs, initdb=initdb)
+    finally:
+        c.stop()
@@ -0,0 +1,240 @@
+import argparse
+import os
+import sys
+from pathlib import Path
+
+from src import (
+    builder,
+    container,
+    log,
+    plan,
+    profile as profile_mod,
+    recipe as recipe_mod,
+)
+from src.layout import Layout, find_repo_root
+
+
+def _resolve_build_dir(p: str | None) -> Path:
+    if p:
+        return Path(p).resolve()
+    env = os.environ.get("ORCHID_BUILD")
+    if env:
+        return Path(env).resolve()
+    cwd = Path.cwd()
+    if (cwd / "profile").is_symlink() or (cwd / "profile").exists():
+        return cwd
+    raise SystemExit("error: -C <build-dir> required (or run inside a build dir)")
+
+
+def _layout(build_dir: Path) -> Layout:
+    repo = find_repo_root(build_dir)
+    return Layout(repo=repo, build=build_dir)
+
+
+def _load(layout: Layout):
+    prof = profile_mod.load_profile(layout)
+    rs = recipe_mod.load_recipes(layout, prof)
+    return prof, rs
+
+
+def cmd_init(args) -> int:
+    target = Path(args.build_dir).resolve()
+    repo = find_repo_root(Path.cwd())
+    profile_mod.init_build_dir(target, repo, args.profile)
+    log.ok(f"initialized {target} (profile: {args.profile})")
+    return 0
+
+
+def cmd_image(args) -> int:
+    layout = _layout(_resolve_build_dir(args.build_dir))
+    layout.ensure()
+    prof = profile_mod.load_profile(layout)
+    container.ensure_image(
+        layout.dockerfile, prof["container_image"], layout.image_hash_file
+    )
+    return 0
+
+
+def _recipe_version(r) -> str:
+    return f"{r.version}-r{r.revision}"
+
+
+def _print_plan(p: plan.Plan) -> None:
+    out = sys.stdout
+    if not p.order:
+        print(
+            f"{log.tag('info', stream=out)} "
+            f"{log.field('plan', 'nothing to do', stream=out)}"
+        )
+        return
+
+    count = len(p.order)
+    suffix = "" if count == 1 else "s"
+    print(
+        f"{log.tag('info', stream=out)} "
+        f"{log.field('plan', f'{count} recipe{suffix}', stream=out)}"
+    )
+
+    rows: list[tuple[str, str, str, str]] = []
+    for i, k in enumerate(p.order, start=1):
+        r = p.recipes[k]
+        rows.append((str(i), k, _recipe_version(r), ", ".join(p.stages.get(k, ()))))
+
+    widths = [
+        max(len(row[0]) for row in rows),
+        max(len("recipe"), *(len(row[1]) for row in rows)),
+        max(len("version"), *(len(row[2]) for row in rows)),
+    ]
+    header = (
+        f"  {'#':>{widths[0]}}  "
+        f"{'recipe':<{widths[1]}}  "
+        f"{'version':<{widths[2]}}  "
+        "stages"
+    )
+    print(log.bold(header, stream=out))
+    for num, name, version, stages in rows:
+        print(
+            f"  {num:>{widths[0]}}  "
+            f"{name:<{widths[1]}}  "
+            f"{version:<{widths[2]}}  "
+            f"{stages}"
+        )
+
+
+def cmd_plan(args) -> int:
+    layout = _layout(_resolve_build_dir(args.build_dir))
+    layout.ensure()
+    prof, rs = _load(layout)
+    p = plan.build_plan(rs, layout, args.recipes or None, rebuild=args.rebuild)
+    _print_plan(p)
+    return 0
+
+
+def cmd_build(args) -> int:
+    layout = _layout(_resolve_build_dir(args.build_dir))
+    layout.ensure()
+    prof, rs = _load(layout)
+    container.ensure_image(
+        layout.dockerfile, prof["container_image"], layout.image_hash_file
+    )
+    p = plan.build_plan(rs, layout, args.recipes or None, rebuild=args.rebuild)
+    if args.dry_run:
+        return cmd_plan(args)
+    builder.execute(p, rs, layout, prof)
+    return 0
+
+
+def cmd_install(args) -> int:
+    layout = _layout(_resolve_build_dir(args.build_dir))
+    layout.ensure()
+    prof, rs = _load(layout)
+    container.ensure_image(
+        layout.dockerfile, prof["container_image"], layout.image_hash_file
+    )
+    dest = Path(args.dest).resolve()
+    dest.mkdir(parents=True, exist_ok=True)
+
+    if args.recipes:
+        pkgs: list[str] = []
+        for k in args.recipes:
+            r = rs.get(k)
+            if r.kind != "target":
+                raise SystemExit(f"error: cannot install host recipe {k!r}")
+            pkgs.extend(r.outputs)
+    else:
+        pkgs = [r.name for r in rs.target.values() if r.enabled]
+
+    builder.install_to(layout, prof, dest, pkgs, initdb=args.initdb)
+    log.ok(f"installed {len(pkgs)} package(s) to {dest}")
+    return 0
+
+
+def cmd_fetch(args) -> int:
+    layout = _layout(_resolve_build_dir(args.build_dir))
+    layout.ensure()
+    prof, rs = _load(layout)
+    from . import fetch as fetch_mod
+
+    targets = args.recipes or [r.key for r in rs.all() if r.enabled]
+    for k in targets:
+        r = rs.get(k)
+        for key, src in r.sources.items():
+            fetch_mod.fetch(layout, src)
+    return 0
+
+
+def _common(p: argparse.ArgumentParser, with_recipes: bool = True) -> None:
+    p.add_argument(
+        "-C", "--build-dir", help="build directory (defaults to $ORCHID_BUILD or cwd)"
+    )
+    if with_recipes:
+        p.add_argument(
+            "recipes", nargs="*", help="recipe keys (target name or host:<name>)"
+        )
+
+
+def make_parser() -> argparse.ArgumentParser:
+    parser = argparse.ArgumentParser(
+        prog="orchid", description="Orchid distribution builder"
+    )
+    sub = parser.add_subparsers(dest="cmd", required=True)
+
+    p_init = sub.add_parser("init", help="create a build directory")
+    p_init.add_argument("build_dir")
+    p_init.add_argument("--profile", required=True)
+    p_init.set_defaults(func=cmd_init)
+
+    p_img = sub.add_parser("image", help="build/refresh the container image")
+    _common(p_img, with_recipes=False)
+    p_img.set_defaults(func=cmd_image)
+
+    p_plan = sub.add_parser("plan", help="print build plan")
+    _common(p_plan)
+    p_plan.add_argument("--rebuild", action="store_true")
+    p_plan.set_defaults(func=cmd_plan)
+
+    p_build = sub.add_parser("build", help="build recipes")
+    _common(p_build)
+    p_build.add_argument("--rebuild", action="store_true")
+    p_build.add_argument("-n", "--dry-run", action="store_true")
+    p_build.set_defaults(func=cmd_build)
+
+    p_inst = sub.add_parser(
+        "install", help="install built packages into a sysroot directory"
+    )
+    p_inst.add_argument(
+        "-C", "--build-dir", help="build directory (defaults to $ORCHID_BUILD or cwd)"
+    )
+    p_inst.add_argument("dest", help="destination sysroot directory")
+    p_inst.add_argument(
+        "recipes",
+        nargs="*",
+        help="target recipes to install (defaults to all enabled targets)",
+    )
+    p_inst.add_argument(
+        "--no-initdb",
+        dest="initdb",
+        action="store_false",
+        help="do not initialize the apk database (use for incremental installs)",
+    )
+    p_inst.set_defaults(func=cmd_install, initdb=True)
+
+    p_fetch = sub.add_parser("fetch", help="fetch sources only")
+    _common(p_fetch)
+    p_fetch.set_defaults(func=cmd_fetch)
+
+    return parser
+
+
+def main(argv: list[str] | None = None) -> int:
+    parser = make_parser()
+    args = parser.parse_args(argv)
+    try:
+        return args.func(args)
+    except (SystemExit, KeyboardInterrupt):
+        raise
+    except Exception as e:
+        log.error(f"{type(e).__name__}: {e}")
+        if os.environ.get("ORCHID_DEBUG"):
+            raise
+        return 1
@@ -1,77 +0,0 @@
-use clap::{Parser, Subcommand};
-use std::path::PathBuf;
-
-use crate::{builder::Builder, config::Config, eval, recipe::RecipeSet};
-
-#[derive(Debug, Parser)]
-struct Cli {
-    #[arg(
-        long,
-        short,
-        default_value = ".",
-        help = "Directory containing the configuration and recipe files"
-    )]
-    root: PathBuf,
-    #[command(subcommand)]
-    command: Command,
-}
-
-#[derive(Debug, Parser)]
-#[command(about = "Fetch sources for the given recipes")]
-struct FetchCommand {
-    #[arg(
-        required = true,
-        help = "List of recipes to fetch, host recipes should be prefixed with `host:`"
-    )]
-    recipes: Vec<String>,
-    #[arg(long, short = 'n', help = "Print what will be done and exit")]
-    dry_run: bool,
-}
-
-#[derive(Debug, Parser)]
-#[command(about = "Build the given recipes")]
-struct BuildCommand {
-    #[arg(
-        required = true,
-        help = "List of recipes to build, host recipes should be prefixed with `host:`"
-    )]
-    recipes: Vec<String>,
-    #[arg(long, short, help = "Perform a full rebuild of the given recipes")]
-    rebuild: bool,
-    #[arg(long, short = 'n', help = "Print what will be done and exit")]
-    dry_run: bool,
-}
-
-#[derive(Debug, Subcommand)]
-enum Command {
-    Fetch(FetchCommand),
-    Build(BuildCommand),
-    #[command(about = "Create or refresh the configured build container image")]
-    Image,
-}
-
-pub fn run() -> anyhow::Result<()> {
-    let cli = Cli::parse();
-
-    let root_path = cli.root.canonicalize().unwrap_or(cli.root);
-    let config = Config::load(&root_path.join("config.star"))?;
-
-    match cli.command {
-        Command::Fetch(command) => {
-            let lib = eval::eval_lib(&root_path.join("lib"), Some(&config.options))?;
-            let recipes = RecipeSet::load(&root_path, &config.options, lib.as_ref())?;
-            let mut builder = Builder::new(root_path, config);
-            builder.fetch(&recipes, &command.recipes, command.dry_run)
-        }
-        Command::Build(command) => {
-            let lib = eval::eval_lib(&root_path.join("lib"), Some(&config.options))?;
-            let recipes = RecipeSet::load(&root_path, &config.options, lib.as_ref())?;
-            let mut builder = Builder::new(root_path, config);
-            builder.build(&recipes, &command.recipes, command.rebuild, command.dry_run)
-        }
-        Command::Image => {
-            let mut builder = Builder::new(root_path, config);
-            builder.ensure_container_ready()
-        }
-    }
-}
@@ -1,117 +0,0 @@
-use std::{
-    collections::HashMap,
-    path::{Path, PathBuf},
-};
-
-use starlark::values::dict::FrozenDictRef;
-
-use crate::{
-    eval::{ExtractError, eval_file, extract_string},
-    options::Options,
-};
-
-#[derive(Debug)]
-pub enum ContainerRuntime {
-    Docker,
-    Podman,
-}
-
-impl ContainerRuntime {
-    pub fn as_str(&self) -> &'static str {
-        match self {
-            Self::Docker => "docker",
-            Self::Podman => "podman",
-        }
-    }
-}
-
-impl std::fmt::Display for ContainerRuntime {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        f.write_str(self.as_str())
-    }
-}
-
-impl TryFrom<&str> for ContainerRuntime {
-    type Error = anyhow::Error;
-
-    fn try_from(value: &str) -> anyhow::Result<Self> {
-        match value {
-            "docker" => Ok(Self::Docker),
-            "podman" => Ok(Self::Podman),
-            _ => anyhow::bail!("invalid runtime: {value}"),
-        }
-    }
-}
-
-#[derive(Debug)]
-pub struct Config {
-    pub container_runtime: ContainerRuntime,
-    pub container_image: String,
-    pub container_dockerfile: PathBuf,
-
-    pub arch: String,
-    pub options: Options,
-}
-
-impl Config {
-    pub fn load(path: &Path) -> anyhow::Result<Self> {
-        let module = eval_file(path, None, None)?;
-
-        let container_runtime = match extract_string(&module, "container_runtime") {
-            Ok(v) => ContainerRuntime::try_from(v.as_str())?,
-            Err(ExtractError::NotFound) => ContainerRuntime::Podman,
-            Err(ExtractError::TypeMismatch) => anyhow::bail!("`container_runtime` is not a string"),
-        };
-        let container_image = match extract_string(&module, "container_image") {
-            Ok(container_image) => container_image,
-            Err(ExtractError::NotFound) => {
-                anyhow::bail!("`container_image` config variable not set")
-            }
-            Err(ExtractError::TypeMismatch) => anyhow::bail!("`container_image` is not a string"),
-        };
-        let container_dockerfile = match extract_string(&module, "container_dockerfile") {
-            Ok(container_dockerfile) => PathBuf::from(container_dockerfile),
-            Err(ExtractError::NotFound) => PathBuf::from("Dockerfile"),
-            Err(ExtractError::TypeMismatch) => {
-                anyhow::bail!("`container_dockerfile` is not a string")
-            }
-        };
-        let arch = match extract_string(&module, "arch") {
-            Ok(arch) => arch,
-            Err(ExtractError::NotFound) => anyhow::bail!("`arch` config variable not set"),
-            Err(ExtractError::TypeMismatch) => anyhow::bail!("`arch` is not a string"),
-        };
-
-        let frozen_module = module.freeze()?;
-        let options_value = frozen_module
-            .get_option("options")?
-            .ok_or_else(|| anyhow::anyhow!("`options` config variable not set"))?;
-        let entries = {
-            // SAFETY: the FrozenValue is only used to construct a FrozenDictRef whose
-            // lifetime is bounded by `options_value`, which keeps the frozen heap alive.
-            let dict =
-                FrozenDictRef::from_frozen_value(unsafe { options_value.unchecked_frozen_value() })
-                    .ok_or_else(|| anyhow::anyhow!("`options` is not a dict"))?;
-            dict.iter()
-                .map(|(k, v)| {
-                    let key = k
-                        .to_value()
-                        .unpack_str()
-                        .ok_or_else(|| anyhow::anyhow!("non-string key in `options`"))?
-                        .to_owned();
-                    Ok((key, options_value.map(|_| v)))
-                })
-                .collect::<anyhow::Result<HashMap<_, _>>>()?
-        };
-        let options = Options::new(entries);
-
-        Ok(Self {
-            container_runtime,
-            container_image,
-            container_dockerfile,
-
-            arch,
-            options,
-        })
-    }
-}
@@ -0,0 +1,200 @@
+import atexit
+import hashlib
+import os
+import signal
+import subprocess
+import threading
+from dataclasses import dataclass, field
+from pathlib import Path
+
+from src import log
+
+
+@dataclass
+class Mount:
+    src: Path
+    dst: str
+    readonly: bool = False
+
+    def as_arg(self) -> str:
+        flag = ":ro" if self.readonly else ""
+        return f"{self.src}:{self.dst}{flag}"
+
+
+_active: set["Container"] = set()
+_lock = threading.Lock()
+_handlers_installed = False
+
+
+def _install_handlers() -> None:
+    global _handlers_installed
+    if _handlers_installed:
+        return
+    _handlers_installed = True
+
+    def cleanup(*_):
+        _shutdown_all()
+
+    atexit.register(_shutdown_all)
+    for s in (signal.SIGINT, signal.SIGTERM):
+        try:
+            signal.signal(s, lambda *_: (_shutdown_all(), os._exit(130)))
+        except (ValueError, OSError):
+            pass
+
+
+def _shutdown_all() -> None:
+    with _lock:
+        cs = list(_active)
+        _active.clear()
+    for c in cs:
+        try:
+            subprocess.run(
+                ["podman", "rm", "-f", c.name],
+                stdout=subprocess.DEVNULL,
+                stderr=subprocess.DEVNULL,
+                check=False,
+            )
+        except Exception:
+            pass
+
+
+@dataclass
+class Container:
+    name: str
+    image: str
+    mounts: list[Mount] = field(default_factory=list)
+    tmpfs: list[str] = field(default_factory=list)
+    network: bool = False
+    extra_env: dict[str, str] = field(default_factory=dict)
+    started: bool = False
+
+    def __hash__(self) -> int:
+        return id(self)
+
+    def __eq__(self, other) -> bool:
+        return self is other
+
+    def start(self) -> None:
+        if self.started:
+            return
+        _install_handlers()
+        # Ensure no stale container.
+        subprocess.run(
+            ["podman", "rm", "-f", self.name],
+            stdout=subprocess.DEVNULL,
+            stderr=subprocess.DEVNULL,
+            check=False,
+        )
+        argv = [
+            "podman",
+            "run",
+            "-d",
+            "--rm",
+            "--name",
+            self.name,
+        ]
+        for t in ("/tmp", "/dest", "/var/cache", *self.tmpfs):
+            argv += ["--tmpfs", t]
+        argv += ["--network=none"] if not self.network else []
+        for m in self.mounts:
+            m.src.mkdir(parents=True, exist_ok=True) if not m.src.exists() else None
+            argv += ["-v", m.as_arg()]
+        argv += [self.image, "sleep", "infinity"]
+        log.debug(f"container start: {' '.join(argv)}")
+        r = subprocess.run(argv, capture_output=True, text=True)
+        if r.returncode != 0:
+            raise RuntimeError(f"podman run failed: {r.stderr.strip()}")
+        with _lock:
+            _active.add(self)
+        self.started = True
+
+    def stop(self) -> None:
+        if not self.started:
+            return
+        subprocess.run(
+            ["podman", "rm", "-f", self.name],
+            stdout=subprocess.DEVNULL,
+            stderr=subprocess.DEVNULL,
+            check=False,
+        )
+        with _lock:
+            _active.discard(self)
+        self.started = False
+
+    def exec(
+        self,
+        argv: list[str],
+        *,
+        env: dict[str, str] | None = None,
+        cwd: str | None = None,
+        check: bool = True,
+        user: str | None = None,
+    ) -> int:
+        if not self.started:
+            raise RuntimeError("container not started")
+        cmd = ["podman", "exec"]
+        if cwd:
+            cmd += ["-w", cwd]
+        if user:
+            cmd += ["-u", user]
+        merged: dict[str, str] = {}
+        merged.update(self.extra_env)
+        if env:
+            merged.update(env)
+        for k, v in merged.items():
+            cmd += ["-e", f"{k}={v}"]
+        cmd += [self.name, *argv]
+        log.debug(f"exec: {' '.join(argv)}")
+        rc = subprocess.call(cmd)
+        if check and rc != 0:
+            raise RuntimeError(f"command failed (exit {rc}): {' '.join(argv)}")
+        return rc
+
+    def exec_shell(
+        self,
+        script: str,
+        *,
+        env: dict[str, str] | None = None,
+        cwd: str | None = None,
+        check: bool = True,
+    ) -> int:
+        return self.exec(["sh", "-ec", script], env=env, cwd=cwd, check=check)
+
+    def cp_out(self, src_in: str, dst_host: Path) -> None:
+        dst_host.parent.mkdir(parents=True, exist_ok=True)
+        r = subprocess.run(
+            ["podman", "cp", f"{self.name}:{src_in}", str(dst_host)],
+            capture_output=True,
+            text=True,
+        )
+        if r.returncode != 0:
+            raise RuntimeError(f"podman cp failed: {r.stderr.strip()}")
+
+
+def hash_dockerfile(p: Path) -> str:
+    return hashlib.sha256(p.read_bytes()).hexdigest()
+
+
+def image_exists(tag: str) -> bool:
+    r = subprocess.run(["podman", "image", "exists", tag])
+    return r.returncode == 0
+
+
+def build_image(dockerfile: Path, tag: str) -> None:
+    log.info(f"building container image {tag}")
+    r = subprocess.run(
+        ["podman", "build", "-t", tag, "-f", str(dockerfile), str(dockerfile.parent)]
+    )
+    if r.returncode != 0:
+        raise RuntimeError("podman build failed")
+
+
+def ensure_image(dockerfile: Path, tag: str, hash_file: Path) -> None:
+    cur = hash_dockerfile(dockerfile) + "\n" + tag
+    if hash_file.exists() and hash_file.read_text() == cur and image_exists(tag):
+        log.debug(f"image {tag} up-to-date")
+        return
+    build_image(dockerfile, tag)
+    hash_file.parent.mkdir(parents=True, exist_ok=True)
+    hash_file.write_text(cur)
@@ -1,292 +0,0 @@
-use std::{
-    fs::File,
-    io::{self, Read},
-    os::{fd::FromRawFd, unix::io::RawFd},
-    path::{Path, PathBuf},
-    process::{Command, Stdio},
-    ptr,
-    sync::{
-        Mutex,
-        atomic::{AtomicBool, AtomicI32, Ordering},
-    },
-    thread,
-};
-
-use anyhow::{Context, bail};
-
-use crate::config::ContainerRuntime;
-
-#[derive(Debug, Clone)]
-pub struct Mount {
-    pub host: PathBuf,
-    pub container: String,
-    pub read_only: bool,
-}
-
-#[derive(Debug)]
-pub struct Container {
-    runtime: &'static str,
-    id: String,
-    stopped: bool,
-}
-
-#[derive(Clone, Debug)]
-struct RegisteredContainer {
-    runtime: &'static str,
-    id: String,
-}
-
-static ACTIVE_CONTAINER: Mutex<Option<RegisteredContainer>> = Mutex::new(None);
-static SIGNAL_CLEANUP_INSTALLED: AtomicBool = AtomicBool::new(false);
-static SIGNAL_WRITE_FD: AtomicI32 = AtomicI32::new(-1);
-
-pub fn install_signals() -> anyhow::Result<()> {
-    if SIGNAL_CLEANUP_INSTALLED
-        .compare_exchange(false, true, Ordering::SeqCst, Ordering::SeqCst)
-        .is_err()
-    {
-        return Ok(());
-    }
-
-    let mut fds = [0; 2];
-    if unsafe { libc::pipe(fds.as_mut_ptr()) } == -1 {
-        SIGNAL_CLEANUP_INSTALLED.store(false, Ordering::SeqCst);
-        return Err(io::Error::last_os_error()).context("creating signal cleanup pipe");
-    }
-
-    set_close_on_exec(fds[0]);
-    set_close_on_exec(fds[1]);
-    SIGNAL_WRITE_FD.store(fds[1], Ordering::SeqCst);
-
-    thread::spawn(move || signal_cleanup_loop(fds[0]));
-    install_signal_handler(libc::SIGINT)?;
-    install_signal_handler(libc::SIGTERM)?;
-
-    Ok(())
-}
-
-impl Container {
-    pub fn start(
-        runtime: &ContainerRuntime,
-        image: &str,
-        name: &str,
-        mounts: &[Mount],
-    ) -> anyhow::Result<Self> {
-        let runtime_str = runtime.as_str();
-        let mut cmd = Command::new(runtime_str);
-        cmd.arg("run")
-            .arg("-d")
-            .arg("--rm")
-            .arg("--name")
-            .arg(name)
-            .arg("--read-only")
-            .arg("--tmpfs")
-            .arg("/tmp")
-            .arg("--tmpfs")
-            .arg("/dest")
-            .arg("--tmpfs")
-            .arg("/sysroot")
-            .arg("--network=none");
-
-        if matches!(runtime, ContainerRuntime::Podman) {
-            cmd.arg("--userns=keep-id");
-        }
-
-        for mount in mounts {
-            let mut spec = format!("{}:{}", mount.host.display(), mount.container);
-            if mount.read_only {
-                spec.push_str(":ro");
-            }
-            cmd.arg("-v").arg(spec);
-        }
-
-        cmd.arg(image).arg("sleep").arg("infinity");
-        cmd.stdout(Stdio::piped()).stderr(Stdio::inherit());
-
-        let output = cmd
-            .output()
-            .with_context(|| format!("spawning `{runtime_str} run` for image `{image}`"))?;
-        if !output.status.success() {
-            bail!(
-                "`{runtime_str} run` failed with {} for image `{image}`",
-                output.status
-            );
-        }
-
-        let id = String::from_utf8(output.stdout)
-            .context("container id is not valid UTF-8")?
-            .trim()
-            .to_owned();
-        if id.is_empty() {
-            bail!("`{runtime_str} run` returned an empty container id");
-        }
-
-        register_container(runtime_str, &id);
-
-        Ok(Self {
-            runtime: runtime_str,
-            id,
-            stopped: false,
-        })
-    }
-
-    pub fn exec(&self, argv: &[String], env: &[(String, String)], cwd: &str) -> anyhow::Result<()> {
-        if argv.is_empty() {
-            bail!("ctx.run called with an empty argv");
-        }
-
-        let mut cmd = Command::new(self.runtime);
-        cmd.arg("exec").arg("-w").arg(cwd);
-        for (k, v) in env {
-            cmd.arg("-e").arg(format!("{k}={v}"));
-        }
-        cmd.arg(&self.id);
-        cmd.args(argv);
-
-        let status = cmd.status().with_context(|| {
-            format!("spawning `{} exec` in container {}", self.runtime, self.id)
-        })?;
-        if !status.success() {
-            bail!("command {argv:?} failed with {status}");
-        }
-        Ok(())
-    }
-
-    pub fn cp_out(&self, src_in_container: &str, host_dst: &Path) -> anyhow::Result<()> {
-        let spec = format!("{}:{}", self.id, src_in_container);
-        let status = Command::new(self.runtime)
-            .arg("cp")
-            .arg(spec)
-            .arg(host_dst)
-            .status()
-            .with_context(|| format!("spawning `{} cp`", self.runtime))?;
-        if !status.success() {
-            bail!(
-                "`{} cp` failed with {status} for {src_in_container} -> {}",
-                self.runtime,
-                host_dst.display()
-            );
-        }
-        Ok(())
-    }
-}
-
-impl Drop for Container {
-    fn drop(&mut self) {
-        if !self.stopped {
-            let _ = Command::new(self.runtime)
-                .arg("rm")
-                .arg("-f")
-                .arg(&self.id)
-                .stdout(Stdio::null())
-                .stderr(Stdio::null())
-                .status();
-            self.stopped = true;
-        }
-        unregister_container(&self.id);
-    }
-}
-
-fn register_container(runtime: &'static str, id: &str) {
-    if let Ok(mut active) = ACTIVE_CONTAINER.lock() {
-        *active = Some(RegisteredContainer {
-            runtime,
-            id: id.to_owned(),
-        });
-    }
-}
-
-fn unregister_container(id: &str) {
-    if let Ok(mut active) = ACTIVE_CONTAINER.lock()
-        && active.as_ref().is_some_and(|container| container.id == id)
-    {
-        *active = None;
-    }
-}
-
-fn active_container() -> Option<RegisteredContainer> {
-    ACTIVE_CONTAINER
-        .lock()
-        .ok()
-        .and_then(|active| active.clone())
-}
-
-fn signal_cleanup_loop(read_fd: RawFd) {
-    let mut signals = unsafe { File::from_raw_fd(read_fd) };
-    let mut buffer = [0_u8; 16];
-
-    loop {
-        match signals.read(&mut buffer) {
-            Ok(0) => return,
-            Ok(len) => {
-                let signal = buffer[..len]
-                    .iter()
-                    .copied()
-                    .find(|signal| *signal != 0)
-                    .unwrap_or(libc::SIGINT as u8);
-                cleanup_after_signal(signal as i32);
-            }
-            Err(error) if error.kind() == io::ErrorKind::Interrupted => {}
-            Err(_) => return,
-        }
-    }
-}
-
-fn cleanup_after_signal(signal: i32) -> ! {
-    if let Some(container) = active_container() {
-        eprintln!(
-            "\nreceived signal {signal}; killing container {}",
-            container.id
-        );
-        kill_container_detached(container.runtime, &container.id);
-    }
-
-    std::process::exit(128 + signal);
-}
-
-fn kill_container_detached(runtime: &str, id: &str) {
-    let _ = Command::new(runtime)
-        .arg("kill")
-        .arg(id)
-        .stdin(Stdio::null())
-        .stdout(Stdio::null())
-        .stderr(Stdio::inherit())
-        .spawn();
-}
-
-fn set_close_on_exec(fd: RawFd) {
-    unsafe {
-        let flags = libc::fcntl(fd, libc::F_GETFD);
-        if flags != -1 {
-            let _ = libc::fcntl(fd, libc::F_SETFD, flags | libc::FD_CLOEXEC);
-        }
-    }
-}
-
-fn install_signal_handler(signal: i32) -> anyhow::Result<()> {
-    let mut action = unsafe { std::mem::zeroed::<libc::sigaction>() };
-    action.sa_sigaction = handle_signal as *const () as usize;
-    action.sa_flags = 0;
-
-    unsafe {
-        libc::sigemptyset(&mut action.sa_mask);
-        if libc::sigaction(signal, &action, ptr::null_mut()) == -1 {
-            return Err(io::Error::last_os_error())
-                .with_context(|| format!("installing handler for signal {signal}"));
-        }
-    }
-
-    Ok(())
-}
-
-extern "C" fn handle_signal(signal: libc::c_int) {
-    let fd = SIGNAL_WRITE_FD.load(Ordering::Relaxed);
-    if fd < 0 {
-        return;
-    }
-
-    let signal = signal as u8;
-    unsafe {
-        libc::write(fd, ptr::addr_of!(signal).cast(), 1);
-    }
-}
@@ -0,0 +1,104 @@
+import os
+from dataclasses import dataclass, field
+from pathlib import PurePosixPath
+from typing import Any
+
+from src.container import Container
+from src.recipe import Recipe
+
+
+@dataclass
+class RecipeContext:
+    """The `self` value passed to recipe phase functions."""
+
+    recipe: Recipe
+    profile: dict
+    container: Container
+    jobs: int
+    _dest_output: str | None = None
+    env: dict[str, str] = field(default_factory=dict)
+
+    @property
+    def name(self) -> str:
+        return self.recipe.name
+
+    @property
+    def version(self) -> str:
+        return self.recipe.version
+
+    @property
+    def revision(self) -> int:
+        return self.recipe.revision
+
+    @property
+    def source_dir(self) -> PurePosixPath:
+        srcs = self.recipe.sources
+        if len(srcs) == 1:
+            return PurePosixPath("/sources")
+        raise RuntimeError(f"{self.name}: multiple sources; use self.sources")
+
+    @property
+    def sources(self) -> dict[str, PurePosixPath]:
+        srcs = self.recipe.sources
+        if len(srcs) == 1:
+            raise RuntimeError(f"{self.name}: only one source; use self.source_dir")
+        out: dict[str, PurePosixPath] = {}
+        for k in srcs.keys():
+            if k is None:
+                raise RuntimeError(f"{self.name}: multiple sources must be named")
+            out[k] = PurePosixPath("/sources") / k
+        return out
+
+    @property
+    def build_dir(self) -> PurePosixPath:
+        return PurePosixPath("/build")
+
+    @property
+    def sysroot(self) -> PurePosixPath:
+        return PurePosixPath("/sysroot")
+
+    @property
+    def dest_dir(self) -> PurePosixPath:
+        if self._dest_output is None:
+            raise RuntimeError("dest_dir only available during install/package phases")
+        return PurePosixPath("/dest") / self._dest_output
+
+    @property
+    def files(self) -> PurePosixPath:
+        if self.recipe.files_dir is None:
+            raise RuntimeError(f"{self.name}: no files/ dir")
+        return PurePosixPath("/files")
+
+    @property
+    def prefix(self) -> str:
+        return f"/tools/{self.name}" if self.recipe.kind == "host" else "/usr"
+
+    @property
+    def triple(self) -> str:
+        return self.profile["triple"]
+
+    @property
+    def arch(self) -> str:
+        return self.profile["arch"]
+
+    def run(
+        self,
+        *argv,
+        env: dict[str, str] | None = None,
+        cwd: str | os.PathLike | None = None,
+    ) -> None:
+        flat: list[str] = []
+        for a in argv:
+            if isinstance(a, (PurePosixPath, os.PathLike)):
+                flat.append(str(a))
+            elif isinstance(a, bool):
+                raise TypeError("bool not allowed in run(); use str")
+            elif isinstance(a, (str, int)):
+                flat.append(str(a))
+            else:
+                raise TypeError(f"unsupported arg type in run(): {type(a).__name__}")
+        merged = dict(self.env)
+        if env:
+            merged.update(env)
+        cwd_s = str(cwd) if cwd is not None else "/build"
+        self.container.exec(flat, env=merged, cwd=cwd_s)
@@ -1,193 +0,0 @@
-use anyhow::Context;
-use starlark::{
-    environment::{FrozenModule, Globals, GlobalsBuilder, Module},
-    eval::Evaluator,
-    syntax::{AstModule, Dialect},
-    values::list::{ListRef, UnpackList},
-};
-use std::path::{Path, PathBuf};
-use walkdir::WalkDir;
-
-use crate::{
-    options::Options,
-    phase::Path as StarPath,
-    recipe::{GitSource, Metadata, Source, Subpackage, TarballSource},
-};
-
-#[derive(Debug)]
-pub enum ExtractError {
-    NotFound,
-    TypeMismatch,
-}
-
-impl std::fmt::Display for ExtractError {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        match self {
-            ExtractError::NotFound => write!(f, "missing"),
-            ExtractError::TypeMismatch => write!(f, "wrong type"),
-        }
-    }
-}
-
-impl std::error::Error for ExtractError {}
-
-#[starlark::starlark_module]
-fn builder_globals(builder: &mut GlobalsBuilder) {
-    fn meta(
-        maintainer: Option<String>,
-        description: Option<String>,
-        license: Option<String>,
-        website: Option<String>,
-    ) -> anyhow::Result<Metadata> {
-        Ok(Metadata::new(maintainer, description, license, website))
-    }
-
-    fn tarball_source(
-        url: String,
-        sha256: String,
-        strip_components: Option<u32>,
-        patches: Option<UnpackList<String>>,
-    ) -> anyhow::Result<Source> {
-        Ok(Source::Tarball(TarballSource::new(
-            url,
-            sha256,
-            strip_components.unwrap_or(0),
-            patches.map(|p| p.items).unwrap_or_default(),
-        )))
-    }
-
-    fn git_source(
-        url: String,
-        commit: String,
-        patches: Option<UnpackList<String>>,
-    ) -> anyhow::Result<Source> {
-        Ok(Source::Git(GitSource::new(
-            url,
-            commit,
-            patches.map(|p| p.items).unwrap_or_default(),
-        )))
-    }
-
-    fn subpackage(
-        name: String,
-        metadata: &Metadata,
-        files: UnpackList<String>,
-    ) -> anyhow::Result<Subpackage> {
-        Ok(Subpackage::new(name, files.items, metadata.clone()))
-    }
-
-    fn path(value: String) -> anyhow::Result<StarPath> {
-        Ok(StarPath::new(value))
-    }
-}
-
-pub fn eval_file(
-    path: &Path,
-    options: Option<&Options>,
-    lib: Option<&FrozenModule>,
-) -> anyhow::Result<Module> {
-    let module = Module::new();
-    if let Some(lib) = lib {
-        module.import_public_symbols(lib);
-    }
-    if let Some(options) = options {
-        inject_options(&module, options);
-    }
-
-    let ast = AstModule::parse_file(path, &dialect()).map_err(|err| anyhow::anyhow!("{err}"))?;
-    let globals = globals();
-
-    let mut eval = Evaluator::new(&module);
-    eval.eval_module(ast, &globals)
-        .map_err(|err| anyhow::anyhow!("{err}"))?;
-    drop(eval);
-
-    Ok(module)
-}
-
-/// Parse and evaluate every `.star` file under `dir` into a single frozen
-/// module whose public bindings can be imported into recipe modules. Returns
-/// `Ok(None)` if `dir` doesn't exist or contains no `.star` files.
-pub fn eval_lib(dir: &Path, options: Option<&Options>) -> anyhow::Result<Option<FrozenModule>> {
-    if !dir.exists() {
-        return Ok(None);
-    }
-
-    let mut files: Vec<PathBuf> = Vec::new();
-    for entry in WalkDir::new(dir) {
-        let entry = entry.with_context(|| format!("walking lib directory {}", dir.display()))?;
-        let path = entry.path();
-        if entry.file_type().is_file() && path.extension().is_some_and(|ext| ext == "star") {
-            files.push(path.to_path_buf());
-        }
-    }
-    if files.is_empty() {
-        return Ok(None);
-    }
-    // Sorted for deterministic ordering when later definitions shadow earlier ones.
-    files.sort();
-
-    let module = Module::new();
-    if let Some(options) = options {
-        inject_options(&module, options);
-    }
-    let dialect = dialect();
-    let globals = globals();
-
-    for file in &files {
-        let ast = AstModule::parse_file(file, &dialect)
-            .map_err(|err| anyhow::anyhow!("parsing {}: {err}", file.display()))?;
-        let mut eval = Evaluator::new(&module);
-        eval.eval_module(ast, &globals)
-            .map_err(|err| anyhow::anyhow!("evaluating {}: {err}", file.display()))?;
-    }
-
-    Ok(Some(module.freeze()?))
-}
-
-fn dialect() -> Dialect {
-    Dialect {
-        enable_top_level_stmt: true,
-        enable_f_strings: true,
-        ..Dialect::Standard
-    }
-}
-
-fn globals() -> Globals {
-    GlobalsBuilder::standard().with(builder_globals).build()
-}
-
-fn inject_options(module: &Module, options: &Options) {
-    let value = module.heap().alloc(options.clone());
-    module.set("options", value);
-}
-
-pub fn extract_string(module: &Module, key: &str) -> Result<String, ExtractError> {
-    module
-        .get(key)
-        .ok_or_else(|| ExtractError::NotFound)
-        .and_then(|v| {
-            v.unpack_str()
-                .map(|v| v.to_string())
-                .ok_or_else(|| ExtractError::TypeMismatch)
-        })
-}
-
-pub fn extract_i32(module: &Module, key: &str) -> Result<i32, ExtractError> {
-    module
-        .get(key)
-        .ok_or(ExtractError::NotFound)
-        .and_then(|v| v.unpack_i32().ok_or(ExtractError::TypeMismatch))
-}
-
-pub fn extract_string_list(module: &Module, key: &str) -> Result<Vec<String>, ExtractError> {
-    let value = module.get(key).ok_or(ExtractError::NotFound)?;
-    let list = ListRef::from_value(value).ok_or(ExtractError::TypeMismatch)?;
-    list.iter()
-        .map(|v| {
-            v.unpack_str()
-                .map(|s| s.to_string())
-                .ok_or(ExtractError::TypeMismatch)
-        })
-        .collect()
-}
@@ -0,0 +1,179 @@
+import contextlib
+import fcntl
+import hashlib
+import os
+import shutil
+import subprocess
+import tarfile
+import tempfile
+import urllib.request
+from pathlib import Path
+
+from src import log
+from src.layout import Layout
+from src.source import Git, Tarball
+
+
+@contextlib.contextmanager
+def cache_lock(layout: Layout):
+    layout.cache_dir.mkdir(parents=True, exist_ok=True)
+    f = open(layout.cache_lock, "w")
+    try:
+        fcntl.flock(f, fcntl.LOCK_EX)
+        yield
+    finally:
+        fcntl.flock(f, fcntl.LOCK_UN)
+        f.close()
+
+
+def fetch_tarball(layout: Layout, src: Tarball) -> Path:
+    dest = layout.tarball_cache / src.sha256
+    if dest.is_file():
+        return dest
+    if src.sha256 == "?":
+        log.warn(f"fetching {src.url} (sha256 unknown)")
+    else:
+        log.info(f"fetching {src.url}")
+    layout.tarball_cache.mkdir(parents=True, exist_ok=True)
+    tmp_fd, tmp_path = tempfile.mkstemp(dir=layout.tarball_cache, prefix=".tmp-")
+    tmp = Path(tmp_path)
+    h = hashlib.sha256()
+    try:
+        with os.fdopen(tmp_fd, "wb") as out, urllib.request.urlopen(src.url) as resp:
+            while True:
+                chunk = resp.read(1 << 20)
+                if not chunk:
+                    break
+                out.write(chunk)
+                h.update(chunk)
+        got = h.hexdigest()
+        if src.sha256 == "?":
+            log.warn(f"computed sha256 = {got}  (paste into recipe)")
+            final = layout.tarball_cache / got
+            os.replace(tmp, final)
+            return final
+        if got != src.sha256:
+            raise RuntimeError(
+                f"sha256 mismatch for {src.url}: expected {src.sha256}, got {got}"
+            )
+        os.replace(tmp, dest)
+        return dest
+    except BaseException:
+        with contextlib.suppress(FileNotFoundError):
+            tmp.unlink()
+        raise
+
+
+def fetch_git(layout: Layout, src: Git) -> Path:
+    dest = layout.git_cache / src.commit
+    if dest.is_dir():
+        return dest
+    log.info(f"git clone {src.url} (commit {src.commit[:12]})")
+    layout.git_cache.mkdir(parents=True, exist_ok=True)
+    with tempfile.TemporaryDirectory(dir=layout.git_cache, prefix=".tmp-") as td:
+        bare = Path(td) / "bare"
+        subprocess.run(
+            ["git", "clone", "--bare", "--quiet", src.url, str(bare)], check=True
+        )
+        r = subprocess.run(["git", "-C", str(bare), "cat-file", "-e", src.commit])
+        if r.returncode != 0:
+            raise RuntimeError(f"commit {src.commit} not found in {src.url}")
+        os.replace(bare, dest)
+    return dest
+
+
+def fetch(layout: Layout, src) -> Path:
+    with cache_lock(layout):
+        if isinstance(src, Tarball):
+            return fetch_tarball(layout, src)
+        if isinstance(src, Git):
+            return fetch_git(layout, src)
+        raise TypeError(f"unknown source type {type(src).__name__}")
+
+
+def _extracted_marker(tree: Path) -> Path:
+    return tree.with_name(tree.name + ".extracted")
+
+
+def _patched_marker(tree: Path) -> Path:
+    return tree.with_name(tree.name + ".patched")
+
+
+def _wipe(tree: Path) -> None:
+    if tree.exists():
+        shutil.rmtree(tree)
+    for m in (_extracted_marker(tree), _patched_marker(tree)):
+        with contextlib.suppress(FileNotFoundError):
+            m.unlink()
+
+
+def extract_tarball(cache_path: Path, tree: Path, strip: int) -> None:
+    tree.mkdir(parents=True, exist_ok=True)
+    # Use tar binary to support all formats including zstd
+    cmd = ["tar", "-xf", str(cache_path), "-C", str(tree)]
+    if strip:
+        cmd += [f"--strip-components={strip}"]
+    subprocess.run(cmd, check=True)
+
+
+def extract_git(cache_path: Path, tree: Path, commit: str) -> None:
+    subprocess.run(["git", "clone", "--quiet", str(cache_path), str(tree)], check=True)
+    subprocess.run(
+        [
+            "git",
+            "-C",
+            str(tree),
+            "-c",
+            "advice.detachedHead=false",
+            "checkout",
+            "--quiet",
+            commit,
+        ],
+        check=True,
+    )
+
+
+def extract(cache_path: Path, src, tree: Path) -> None:
+    _wipe(tree)
+    if isinstance(src, Tarball):
+        extract_tarball(cache_path, tree, src.strip_components)
+    elif isinstance(src, Git):
+        extract_git(cache_path, tree, src.commit)
+    else:
+        raise TypeError(f"unknown source type {type(src).__name__}")
+    _extracted_marker(tree).write_text("ok\n")
+
+
+def apply_patches(tree: Path, recipe_dir: Path, patches: tuple[str, ...]) -> None:
+    if not patches:
+        _patched_marker(tree).write_text("\n")
+        return
+    pdir = recipe_dir / "patches"
+    for name in patches:
+        p = pdir / name
+        if not p.is_file():
+            raise FileNotFoundError(f"patch not found: {p}")
+        log.info(f"  patch {name}")
+        with open(p, "rb") as fh:
+            r = subprocess.run(
+                ["patch", "-p1", "--no-backup-if-mismatch", "--quiet"],
+                cwd=tree,
+                stdin=fh,
+            )
+        if r.returncode != 0:
+            raise RuntimeError(f"patch {name} failed in {tree}")
+    _patched_marker(tree).write_text("\n".join(patches) + "\n")
+
+
+def prepare_source(layout: Layout, recipe_dir: Path, src, tree: Path) -> None:
+    """Fetch + extract + patch into `tree`. Idempotent via marker files."""
+    cache_path = fetch(layout, src)
+    expected_patches = "\n".join(src.patches) + "\n" if src.patches else "\n"
+    if (
+        _patched_marker(tree).is_file()
+        and _patched_marker(tree).read_text() == expected_patches
+    ):
+        return
+    log.info(f"extract {tree.name}")
+    extract(cache_path, src, tree)
+    apply_patches(tree, recipe_dir, src.patches)
@@ -1,434 +0,0 @@
-use std::{
-    collections::{BTreeMap, BTreeSet},
-    fmt, fs,
-    path::Path,
-};
-
-use anyhow::bail;
-
-use crate::{
-    layout::Layout,
-    recipe::{OutputPackage, Recipe, RecipeKind, RecipeSet},
-};
-
-#[derive(Clone, Debug, Eq, Ord, PartialEq, PartialOrd)]
-pub enum TaskId {
-    FetchSources(String),
-    PrepareSources(String),
-    PrepareRecipe(String),
-    ConfigureRecipe(String),
-    BuildRecipe(String),
-    InstallPackageFiles(String),
-    ProduceApk(String),
-    InstallHostRecipe(String),
-}
-
-impl fmt::Display for TaskId {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        match self {
-            Self::FetchSources(recipe) => write!(f, "fetch sources {recipe}"),
-            Self::PrepareSources(recipe) => write!(f, "prepare sources {recipe}"),
-            Self::PrepareRecipe(recipe) => write!(f, "prepare recipe {recipe}"),
-            Self::ConfigureRecipe(recipe) => write!(f, "configure {recipe}"),
-            Self::BuildRecipe(recipe) => write!(f, "build {recipe}"),
-            Self::InstallPackageFiles(output) => write!(f, "install package files {output}"),
-            Self::ProduceApk(output) => write!(f, "produce apk {output}"),
-            Self::InstallHostRecipe(recipe) => write!(f, "install host recipe {recipe}"),
-        }
-    }
-}
-
-#[derive(Debug)]
-pub struct TaskPlan {
-    dependencies: BTreeMap<TaskId, Vec<TaskId>>,
-    order: Vec<TaskId>,
-}
-
-impl TaskPlan {
-    pub fn order(&self) -> &[TaskId] {
-        &self.order
-    }
-
-    pub fn is_empty(&self) -> bool {
-        self.order.is_empty()
-    }
-
-    pub fn dependency_count(&self) -> usize {
-        self.dependencies.values().map(Vec::len).sum()
-    }
-}
-
-pub struct TaskPlanner<'a> {
-    layout: Layout<'a>,
-    recipes: &'a RecipeSet,
-    forced_recipes: BTreeSet<String>,
-    dependencies: BTreeMap<TaskId, Vec<TaskId>>,
-    inactive: BTreeSet<TaskId>,
-    visiting: BTreeSet<TaskId>,
-    visited: BTreeSet<TaskId>,
-}
-
-impl<'a> TaskPlanner<'a> {
-    pub fn new(root: &'a Path, arch: &'a str, recipes: &'a RecipeSet) -> Self {
-        Self {
-            layout: Layout::new(root, arch),
-            recipes,
-            forced_recipes: BTreeSet::new(),
-            dependencies: BTreeMap::new(),
-            inactive: BTreeSet::new(),
-            visiting: BTreeSet::new(),
-            visited: BTreeSet::new(),
-        }
-    }
-
-    pub fn build_plan(mut self, requests: &[String], force: bool) -> anyhow::Result<TaskPlan> {
-        for request in requests {
-            let recipe = self.recipes.recipe(request)?;
-            if force {
-                self.forced_recipes.insert(recipe.key());
-            }
-            match recipe.kind() {
-                RecipeKind::Package => {
-                    for output in recipe.outputs() {
-                        self.visit(TaskId::ProduceApk(output.key()))?;
-                    }
-                }
-                RecipeKind::HostPackage => {
-                    self.visit(TaskId::InstallHostRecipe(recipe.key()))?;
-                }
-            }
-        }
-        self.into_plan()
-    }
-
-    pub fn fetch_plan(mut self, requests: &[String]) -> anyhow::Result<TaskPlan> {
-        for request in requests {
-            let recipe = self.recipes.recipe(request)?;
-            self.visit(TaskId::FetchSources(recipe.key()))?;
-        }
-        self.into_plan()
-    }
-
-    fn visit(&mut self, task: TaskId) -> anyhow::Result<()> {
-        if self.visited.contains(&task) || self.inactive.contains(&task) {
-            return Ok(());
-        }
-        if !self.is_active(&task)? {
-            self.inactive.insert(task);
-            return Ok(());
-        }
-        if !self.visiting.insert(task.clone()) {
-            bail!("task dependency cycle involving `{task}`");
-        }
-
-        let dependencies = self.dependencies(&task)?;
-        let mut active_dependencies = Vec::new();
-        for dependency in dependencies {
-            self.visit(dependency.clone())?;
-            if self.dependencies.contains_key(&dependency) {
-                active_dependencies.push(dependency);
-            }
-        }
-
-        self.visiting.remove(&task);
-        self.visited.insert(task.clone());
-        self.dependencies.insert(task, active_dependencies);
-        Ok(())
-    }
-
-    fn into_plan(self) -> anyhow::Result<TaskPlan> {
-        let order = recipe_contiguous_order(&self.dependencies, self.recipes)?;
-        Ok(TaskPlan {
-            dependencies: self.dependencies,
-            order,
-        })
-    }
-
-    fn dependencies(&self, task: &TaskId) -> anyhow::Result<Vec<TaskId>> {
-        match task {
-            TaskId::FetchSources(_) => Ok(Vec::new()),
-            TaskId::PrepareSources(recipe) => Ok(vec![TaskId::FetchSources(recipe.clone())]),
-            TaskId::PrepareRecipe(recipe) => Ok(vec![TaskId::PrepareSources(recipe.clone())]),
-            TaskId::ConfigureRecipe(recipe) => {
-                let recipe = self.recipes.recipe(recipe)?;
-                let mut deps = vec![
-                    TaskId::PrepareSources(recipe.key()),
-                    TaskId::PrepareRecipe(recipe.key()),
-                ];
-                deps.extend(
-                    recipe
-                        .host_deps()
-                        .iter()
-                        .map(|dep| TaskId::InstallHostRecipe(RecipeKind::HostPackage.key(dep))),
-                );
-                deps.extend(
-                    recipe
-                        .build_deps()
-                        .iter()
-                        .chain(recipe.deps().iter())
-                        .map(|dep| TaskId::ProduceApk(dep.clone())),
-                );
-                Ok(deps)
-            }
-            TaskId::BuildRecipe(recipe) => Ok(vec![TaskId::ConfigureRecipe(recipe.clone())]),
-            TaskId::InstallPackageFiles(output) => {
-                let output = self.recipes.output(output)?;
-                let recipe = self.recipes.recipe(output.recipe())?;
-                if output.is_base() {
-                    Ok(vec![TaskId::BuildRecipe(output.recipe().to_owned())])
-                } else {
-                    let base = recipe.base_output().ok_or_else(|| {
-                        anyhow::anyhow!("recipe `{}` has no base output", recipe.key())
-                    })?;
-                    Ok(vec![TaskId::InstallPackageFiles(base.key())])
-                }
-            }
-            TaskId::ProduceApk(output) => {
-                let output = self.recipes.output(output)?;
-                let recipe = self.recipes.recipe(output.recipe())?;
-                let mut deps = vec![TaskId::InstallPackageFiles(output.key())];
-                if output.is_base() {
-                    deps.extend(
-                        recipe
-                            .outputs()
-                            .iter()
-                            .filter(|candidate| !candidate.is_base())
-                            .map(|subpackage| TaskId::InstallPackageFiles(subpackage.key())),
-                    );
-                }
-                deps.extend(
-                    recipe
-                        .deps()
-                        .iter()
-                        .chain(recipe.run_deps().iter())
-                        .map(|dep| TaskId::ProduceApk(dep.clone())),
-                );
-                Ok(deps)
-            }
-            TaskId::InstallHostRecipe(recipe) => {
-                self.recipes.recipe(recipe)?;
-                Ok(vec![TaskId::BuildRecipe(recipe.clone())])
-            }
-        }
-    }
-
-    fn is_active(&self, task: &TaskId) -> anyhow::Result<bool> {
-        match task {
-            TaskId::FetchSources(recipe) => self.fetch_sources_active(self.recipes.recipe(recipe)?),
-            TaskId::PrepareSources(recipe) => {
-                self.prepare_sources_active(self.recipes.recipe(recipe)?)
-            }
-            TaskId::PrepareRecipe(recipe) => {
-                self.prepare_recipe_active(self.recipes.recipe(recipe)?)
-            }
-            TaskId::ConfigureRecipe(recipe) => {
-                self.recipe_task_active(self.recipes.recipe(recipe)?, "configure")
-            }
-            TaskId::BuildRecipe(recipe) => {
-                self.recipe_task_active(self.recipes.recipe(recipe)?, "build")
-            }
-            TaskId::InstallPackageFiles(output) => {
-                let output = self.recipes.output(output)?;
-                let recipe = self.recipes.recipe(output.recipe())?;
-                if output.is_base() {
-                    return recipe.outputs().iter().try_fold(false, |active, output| {
-                        Ok(active
-                            || self.output_task_active(recipe, output, "install")?
-                            || self.produce_apk_active(recipe, output)?)
-                    });
-                }
-                let base = recipe.base_output().ok_or_else(|| {
-                    anyhow::anyhow!("recipe `{}` has no base output", recipe.key())
-                })?;
-                Ok(self.output_task_active(recipe, output, "install")?
-                    || self.produce_apk_active(recipe, output)?
-                    || self.produce_apk_active(recipe, base)?)
-            }
-            TaskId::ProduceApk(output) => {
-                let output = self.recipes.output(output)?;
-                let recipe = self.recipes.recipe(output.recipe())?;
-                self.produce_apk_active(recipe, output)
-            }
-            TaskId::InstallHostRecipe(recipe) => {
-                let recipe = self.recipes.recipe(recipe)?;
-                self.install_host_recipe_active(recipe)
-            }
-        }
-    }
-
-    fn fetch_sources_active(&self, recipe: &Recipe) -> anyhow::Result<bool> {
-        Ok(recipe.sources().entries().iter().any(|(_, source)| {
-            source.is_unknown_cache_key()
-                || !self.layout.source_cache_path(source.cache_key()).exists()
-        }))
-    }
-
-    fn is_recipe_forced(&self, recipe: &Recipe) -> bool {
-        self.forced_recipes.contains(&recipe.key())
-    }
-
-    fn prepare_sources_active(&self, recipe: &Recipe) -> anyhow::Result<bool> {
-        if self.is_recipe_forced(recipe) {
-            return Ok(true);
-        }
-        let want_version = format!("{}-r{}", recipe.version(), recipe.revision());
-        if fs::read_to_string(self.layout.source_stamp(recipe, "version"))
-            .ok()
-            .as_deref()
-            != Some(want_version.as_str())
-        {
-            return Ok(true);
-        }
-        if self.layout.recipe_has_patches(recipe)?
-            && !self.layout.source_stamp(recipe, "patched").exists()
-        {
-            return Ok(true);
-        }
-        Ok(false)
-    }
-
-    fn prepare_recipe_active(&self, recipe: &Recipe) -> anyhow::Result<bool> {
-        if recipe.phases().prepare().is_none() {
-            return Ok(false);
-        }
-        if self.prepare_sources_active(recipe)? {
-            return Ok(true);
-        }
-        self.recipe_task_active(recipe, "prepare")
-    }
-
-    fn recipe_task_active(&self, recipe: &Recipe, kind: &str) -> anyhow::Result<bool> {
-        if self.is_recipe_forced(recipe) {
-            return Ok(true);
-        }
-        Ok(
-            fs::read_to_string(self.layout.recipe_task_stamp(recipe, kind))
-                .ok()
-                .as_deref()
-                != Some(self.layout.recipe_fingerprint(recipe)?.as_str()),
-        )
-    }
-
-    fn output_task_active(
-        &self,
-        recipe: &Recipe,
-        output: &OutputPackage,
-        kind: &str,
-    ) -> anyhow::Result<bool> {
-        if self.is_recipe_forced(recipe) {
-            return Ok(true);
-        }
-        Ok(
-            fs::read_to_string(self.layout.output_task_stamp(output, kind))
-                .ok()
-                .as_deref()
-                != Some(self.layout.output_fingerprint(recipe, output)?.as_str()),
-        )
-    }
-
-    fn produce_apk_active(&self, recipe: &Recipe, output: &OutputPackage) -> anyhow::Result<bool> {
-        if self.is_recipe_forced(recipe) {
-            return Ok(true);
-        }
-        if !self.layout.apk_path(recipe, output).exists() {
-            return Ok(true);
-        }
-        Ok(
-            fs::read_to_string(self.layout.output_task_stamp(output, "apk"))
-                .ok()
-                .as_deref()
-                != Some(self.layout.output_fingerprint(recipe, output)?.as_str()),
-        )
-    }
-
-    fn install_host_recipe_active(&self, recipe: &Recipe) -> anyhow::Result<bool> {
-        if self.is_recipe_forced(recipe) {
-            return Ok(true);
-        }
-        if !self.layout.host_install_dir(recipe).exists() {
-            return Ok(true);
-        }
-        Ok(
-            fs::read_to_string(self.layout.recipe_task_stamp(recipe, "host-install"))
-                .ok()
-                .as_deref()
-                != Some(self.layout.recipe_fingerprint(recipe)?.as_str()),
-        )
-    }
-}
-
-fn recipe_contiguous_order(
-    dependencies: &BTreeMap<TaskId, Vec<TaskId>>,
-    recipes: &RecipeSet,
-) -> anyhow::Result<Vec<TaskId>> {
-    let total = dependencies.len();
-    let mut remaining: BTreeMap<TaskId, BTreeSet<TaskId>> = dependencies
-        .iter()
-        .map(|(task, deps)| (task.clone(), deps.iter().cloned().collect()))
-        .collect();
-
-    let mut dependents: BTreeMap<TaskId, Vec<TaskId>> = BTreeMap::new();
-    for (task, deps) in dependencies {
-        for dep in deps {
-            dependents
-                .entry(dep.clone())
-                .or_default()
-                .push(task.clone());
-        }
-    }
-
-    let mut order = Vec::with_capacity(total);
-    let mut current_recipe: Option<String> = None;
-    while order.len() < total {
-        let next = pick_next(&remaining, current_recipe.as_deref(), recipes)?;
-        let slug = task_recipe_slug(&next, recipes)?;
-        current_recipe = Some(slug);
-        remaining.remove(&next);
-        if let Some(children) = dependents.get(&next) {
-            for child in children {
-                if let Some(deps) = remaining.get_mut(child) {
-                    deps.remove(&next);
-                }
-            }
-        }
-        order.push(next);
-    }
-    Ok(order)
-}
-
-fn pick_next(
-    remaining: &BTreeMap<TaskId, BTreeSet<TaskId>>,
-    current_recipe: Option<&str>,
-    recipes: &RecipeSet,
-) -> anyhow::Result<TaskId> {
-    let mut fallback: Option<TaskId> = None;
-    for (task, deps) in remaining {
-        if !deps.is_empty() {
-            continue;
-        }
-        if let Some(active) = current_recipe {
-            let slug = task_recipe_slug(task, recipes)?;
-            if slug == active {
-                return Ok(task.clone());
-            }
-        }
-        if fallback.is_none() {
-            fallback = Some(task.clone());
-        }
-    }
-    fallback.ok_or_else(|| anyhow::anyhow!("task dependency cycle detected"))
-}
-
-pub fn task_recipe_slug(task: &TaskId, recipes: &RecipeSet) -> anyhow::Result<String> {
-    Ok(match task {
-        TaskId::FetchSources(recipe)
-        | TaskId::PrepareSources(recipe)
-        | TaskId::PrepareRecipe(recipe)
-        | TaskId::ConfigureRecipe(recipe)
-        | TaskId::BuildRecipe(recipe)
-        | TaskId::InstallHostRecipe(recipe) => recipe.clone(),
-        TaskId::InstallPackageFiles(output) | TaskId::ProduceApk(output) => {
-            recipes.output(output)?.recipe().to_owned()
-        }
-    })
-}
@@ -0,0 +1,107 @@
+from dataclasses import dataclass
+from pathlib import Path
+
+
+@dataclass(frozen=True)
+class Layout:
+    """All filesystem paths used by the builder."""
+
+    repo: Path
+    build: Path
+
+    @property
+    def recipes_dir(self) -> Path:
+        return self.repo / "recipes"
+
+    @property
+    def host_recipes_dir(self) -> Path:
+        return self.repo / "host-recipes"
+
+    @property
+    def profiles_dir(self) -> Path:
+        return self.repo / "profiles"
+
+    @property
+    def dockerfile(self) -> Path:
+        return self.repo / "Dockerfile"
+
+    @property
+    def cache_dir(self) -> Path:
+        return self.repo / "cache"
+
+    @property
+    def tarball_cache(self) -> Path:
+        return self.cache_dir / "tarballs"
+
+    @property
+    def git_cache(self) -> Path:
+        return self.cache_dir / "git"
+
+    @property
+    def cache_lock(self) -> Path:
+        return self.cache_dir / ".lock"
+
+    @property
+    def sources_dir(self) -> Path:
+        return self.repo / "sources"
+
+    def source_tree(self, name: str, version: str) -> Path:
+        return self.sources_dir / f"{name}-{version}"
+
+    @property
+    def profile_link(self) -> Path:
+        return self.build / "profile"
+
+    @property
+    def build_workdirs(self) -> Path:
+        return self.build / "builds"
+
+    def build_workdir(self, name: str) -> Path:
+        return self.build_workdirs / name
+
+    @property
+    def host_pkgs_dir(self) -> Path:
+        return self.build / "host-pkgs"
+
+    def host_pkg_dir(self, name: str) -> Path:
+        return self.host_pkgs_dir / name
+
+    def host_pkg_marker(self, name: str, version: str, revision: int) -> Path:
+        return self.host_pkg_dir(name) / f".built-{version}-r{revision}"
+
+    @property
+    def pkgs_dir(self) -> Path:
+        return self.build / "pkgs"
+
+    def apk_path(self, output: str, version: str, revision: int) -> Path:
+        return self.pkgs_dir / f"{output}-{version}-r{revision}.apk"
+
+    @property
+    def apkindex(self) -> Path:
+        return self.pkgs_dir / "Packages.adb"
+
+    @property
+    def image_hash_file(self) -> Path:
+        return self.build / ".image-hash"
+
+    def ensure(self) -> None:
+        for p in (
+            self.cache_dir,
+            self.tarball_cache,
+            self.git_cache,
+            self.sources_dir,
+            self.build_workdirs,
+            self.host_pkgs_dir,
+            self.pkgs_dir,
+        ):
+            p.mkdir(parents=True, exist_ok=True)
+
+
+def find_repo_root(start: Path) -> Path:
+    cur = start.resolve()
+    for p in (cur, *cur.parents):
+        if (p / "Dockerfile").is_file() and (p / "profiles").is_dir():
+            return p
+    raise FileNotFoundError(
+        f"Could not find Orchid repo root (looking for Dockerfile + profiles/) from {start}"
+    )
@@ -1,123 +0,0 @@
-use std::{
-    fs,
-    path::{Path, PathBuf},
-};
-
-use anyhow::Context;
-use sha2::{Digest, Sha256};
-
-use crate::recipe::{OutputPackage, Recipe};
-
-pub struct Layout<'a> {
-    pub root: &'a Path,
-    pub arch: &'a str,
-}
-
-impl<'a> Layout<'a> {
-    pub fn new(root: &'a Path, arch: &'a str) -> Self {
-        Self { root, arch }
-    }
-
-    pub fn source_cache_dir(&self) -> PathBuf {
-        self.root.join("build/cache/sources")
-    }
-
-    pub fn source_cache_path(&self, key: &str) -> PathBuf {
-        self.source_cache_dir().join(key)
-    }
-
-    pub fn source_workdir(&self, recipe: &Recipe) -> PathBuf {
-        self.root.join("build/sources").join(recipe.slug())
-    }
-
-    pub fn build_workdir(&self, recipe: &Recipe) -> PathBuf {
-        self.root.join("build/builds").join(recipe.slug())
-    }
-
-    pub fn host_install_dir(&self, recipe: &Recipe) -> PathBuf {
-        self.root.join("build/host-pkgs").join(recipe.slug())
-    }
-
-    pub fn host_install_root(&self, recipe: &Recipe) -> PathBuf {
-        self.root.join("build/host-pkgs").join(recipe.slug())
-    }
-
-    pub fn apk_path(&self, recipe: &Recipe, output: &OutputPackage) -> PathBuf {
-        self.root.join("build/pkgs").join(self.arch).join(format!(
-            "{}-{}-r{}.apk",
-            output.name(),
-            recipe.version(),
-            recipe.revision()
-        ))
-    }
-
-    pub fn source_stamp(&self, recipe: &Recipe, kind: &str) -> PathBuf {
-        self.root
-            .join("build/sources")
-            .join(format!("{}.{kind}", recipe.slug()))
-    }
-
-    pub fn recipe_task_stamp(&self, recipe: &Recipe, kind: &str) -> PathBuf {
-        self.root
-            .join("build/tasks")
-            .join(format!("{}.{kind}", recipe.slug()))
-    }
-
-    pub fn output_task_stamp(&self, output: &OutputPackage, kind: &str) -> PathBuf {
-        self.root
-            .join("build/tasks")
-            .join(format!("{}.{kind}", output.key().replace(':', "-")))
-    }
-
-    pub fn recipe_fingerprint(&self, recipe: &Recipe) -> anyhow::Result<String> {
-        let mut hasher = Sha256::new();
-        hasher.update(self.arch.as_bytes());
-        hasher.update(recipe.key().as_bytes());
-        hasher.update(recipe.version().as_bytes());
-        hasher.update(recipe.revision().to_le_bytes());
-        hasher.update(
-            fs::read(recipe.path())
-                .with_context(|| format!("reading recipe {}", recipe.path().display()))?,
-        );
-        for (name, source) in recipe.sources().entries() {
-            hasher.update(name.unwrap_or("").as_bytes());
-            hasher.update(source.url().as_bytes());
-            hasher.update(source.cache_key().as_bytes());
-        }
-        for patch in self.recipe_patches(recipe)? {
-            hasher.update(patch.display().to_string().as_bytes());
-            hasher
-                .update(fs::read(&patch).with_context(|| format!("reading {}", patch.display()))?);
-        }
-        Ok(hex::encode(hasher.finalize()))
-    }
-
-    pub fn output_fingerprint(
-        &self,
-        recipe: &Recipe,
-        output: &OutputPackage,
-    ) -> anyhow::Result<String> {
-        let mut hasher = Sha256::new();
-        hasher.update(self.recipe_fingerprint(recipe)?.as_bytes());
-        hasher.update(output.key().as_bytes());
-        Ok(hex::encode(hasher.finalize()))
-    }
-
-    pub fn recipe_has_patches(&self, recipe: &Recipe) -> anyhow::Result<bool> {
-        Ok(!self.recipe_patches(recipe)?.is_empty())
-    }
-
-    pub fn recipe_patches(&self, recipe: &Recipe) -> anyhow::Result<Vec<PathBuf>> {
-        let Some(data_dir) = recipe.data_dir() else {
-            return Ok(Vec::new());
-        };
-        let patches_dir = data_dir.join("patches");
-        let mut out = Vec::new();
-        for (_, source) in recipe.sources().entries() {
-            for name in source.patches() {
-                out.push(patches_dir.join(name));
-            }
-        }
-        Ok(out)
-    }
-}
@@ -0,0 +1,45 @@
+def autotools_configure(self, extra_args=(), extra_env=None):
+    p = self.profile
+    env = {
+        "CFLAGS": p.get("cflags", ""),
+        "CXXFLAGS": p.get("cxxflags", ""),
+        "LDFLAGS": p.get("ldflags", ""),
+    }
+    if extra_env:
+        env.update(extra_env)
+    args = [
+        self.source_dir / "configure",
+        f"--host={p['triple']}",
+        f"--with-sysroot={self.sysroot}",
+        f"--prefix={p.get('prefix', '/usr')}",
+        f"--sysconfdir={p.get('sysconfdir', '/etc')}",
+        f"--localstatedir={p.get('localstatedir', '/var')}",
+        f"--bindir={p.get('bindir', '/usr/bin')}",
+        f"--sbindir={p.get('sbindir', '/usr/bin')}",
+        f"--libdir={p.get('libdir', '/usr/lib')}",
+        "--disable-static",
+        "--enable-shared",
+        *extra_args,
+    ]
+    self.run(*args, env=env)
+
+
+def autotools_build(self, extra_args=()):
+    self.run("make", f"-j{self.jobs}", *extra_args)
+
+
+def autotools_install(self, extra_args=()):
+    self.run("make", "install", *extra_args, env={"DESTDIR": str(self.dest_dir)})
+
+
+def autotools(*, configure_args=(), configure_env=None, build_args=(), install_args=()):
+    def _configure(self):
+        autotools_configure(self, configure_args, configure_env)
+
+    def _build(self):
+        autotools_build(self, build_args)
+
+    def _install(self):
+        autotools_install(self, (*install_args, f"DESTDIR={self.dest_dir}"))
+
+    return _configure, _build, _install
@@ -0,0 +1,73 @@
+def cmake_configure(self, extra_args=(), extra_env=None, *, host=False):
+    p = self.profile
+    if host:
+        env = {
+            "CFLAGS": p.get("host_cflags", ""),
+            "CXXFLAGS": p.get("host_cxxflags", ""),
+            "LDFLAGS": p.get("host_ldflags", ""),
+        }
+        toolchain = []
+    else:
+        env = {
+            "CFLAGS": p.get("cflags", ""),
+            "CXXFLAGS": p.get("cxxflags", ""),
+            "LDFLAGS": p.get("ldflags", ""),
+        }
+        toolchain = [
+            "-DCMAKE_SYSTEM_NAME=Linux",
+            f"-DCMAKE_SYSTEM_PROCESSOR={p['arch']}",
+            f"-DCMAKE_SYSROOT={self.sysroot}",
+            f"-DCMAKE_C_COMPILER={p['triple']}-gcc",
+            f"-DCMAKE_CXX_COMPILER={p['triple']}-g++",
+            "-DCMAKE_FIND_ROOT_PATH_MODE_PROGRAM=NEVER",
+            "-DCMAKE_FIND_ROOT_PATH_MODE_LIBRARY=ONLY",
+            "-DCMAKE_FIND_ROOT_PATH_MODE_INCLUDE=ONLY",
+            "-DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=ONLY",
+        ]
+    if extra_env:
+        env.update(extra_env)
+    self.run(
+        "cmake",
+        "-S",
+        self.source_dir,
+        "-B",
+        self.build_dir,
+        "-G",
+        "Ninja",
+        "-DCMAKE_BUILD_TYPE=Release",
+        f"-DCMAKE_INSTALL_PREFIX={p.get('prefix', '/usr')}",
+        f"-DCMAKE_INSTALL_SYSCONFDIR={p.get('sysconfdir', '/etc')}",
+        f"-DCMAKE_INSTALL_LOCALSTATEDIR={p.get('localstatedir', '/var')}",
+        *toolchain,
+        *extra_args,
+        env=env,
+    )
+
+
+def cmake_build(self, extra_args=()):
+    self.run("cmake", "--build", self.build_dir, "-j", self.jobs, *extra_args)
+
+
+def cmake_install(self, extra_args=()):
+    self.run(
+        "cmake",
+        "--install",
+        self.build_dir,
+        *extra_args,
+        env={"DESTDIR": str(self.dest_dir)},
+    )
+
+
+def cmake(
+    *, configure_args=(), configure_env=None, build_args=(), install_args=(), host=False
+):
+    def _configure(self):
+        cmake_configure(self, configure_args, configure_env, host=host)
+
+    def _build(self):
+        cmake_build(self, build_args)
+
+    def _install(self):
+        cmake_install(self, install_args)
+
+    return _configure, _build, _install
@@ -0,0 +1,9 @@
+def make_build(self, extra_args=(), *, env=None):
+    self.run("make", f"-j{self.jobs}", *extra_args, env=env)
+
+
+def make_install(self, extra_args=(), *, env=None):
+    merged = {"DESTDIR": str(self.dest_dir)}
+    if env:
+        merged.update(env)
+    self.run("make", "install", *extra_args, env=merged)
@@ -0,0 +1,85 @@
+def meson_cross_file(self):
+    cross = self.build_dir / "meson-cross.ini"
+    self.write_text(
+        cross,
+        f"""\
+[binaries]
+c = '{self.triple}-gcc'
+cpp = '{self.triple}-g++'
+ar = '{self.triple}-gcc-ar'
+nm = '{self.triple}-nm'
+objcopy = '{self.triple}-objcopy'
+ranlib = '{self.triple}-ranlib'
+strip = '{self.triple}-strip'
+pkg-config = '{self.triple}-pkg-config'
+
+[host_machine]
+system = 'linux'
+cpu_family = '{self.arch}'
+cpu = '{self.arch}'
+endian = 'little'
+""",
+    )
+    return cross
+
+
+def meson_configure(
+    self, extra_args=(), extra_env=None, *, source_dir=None, flags=True, host=False
+):
+    p = self.options
+    env = {}
+    if flags:
+        env.update(
+            {
+                "CFLAGS": p.get("cflags", ""),
+                "CXXFLAGS": p.get("cxxflags", ""),
+                "LDFLAGS": p.get("ldflags", ""),
+            }
+        )
+    if extra_env:
+        env.update(extra_env)
+    cross_args = [] if host else ["--cross-file", meson_cross_file(self)]
+    self.run(
+        "meson",
+        "setup",
+        source_dir or self.source_dir,
+        *cross_args,
+        f"--prefix={p.get('prefix', '/usr')}",
+        f"--sysconfdir={p.get('sysconfdir', '/etc')}",
+        f"--localstatedir={p.get('localstatedir', '/var')}",
+        "--libdir=lib",
+        "--sbindir=bin",
+        "--bindir=bin",
+        "--datadir=share",
+        "--buildtype=release",
+        "-Ddefault_library=shared",
+        *extra_args,
+        env=env,
+    )
+
+
+def meson_build(self, extra_args=()):
+    self.run("meson", "compile", f"-j{self.jobs}", *extra_args)
+
+
+def meson_install(self, extra_args=()):
+    self.run(
+        "meson",
+        "install",
+        "--no-rebuild",
+        *extra_args,
+        env={"DESTDIR": str(self.dest_dir)},
+    )
+
+
+def meson(*, configure_args=(), configure_env=None, build_args=(), install_args=()):
+    def _configure(self):
+        meson_configure(self, configure_args, configure_env)
+
+    def _build(self):
+        meson_build(self, build_args)
+
+    def _install(self):
+        meson_install(self, install_args)
+
+    return _configure, _build, _install
@@ -0,0 +1,70 @@
+import os
+import sys
+from typing import TextIO
+
+_COLORS = {
+    "debug": "\033[2m",
+    "info": "\033[34m",
+    "warn": "\033[33m",
+    "error": "\033[31m",
+    "ok": "\033[32m",
+}
+_RESET = "\033[0m"
+_BOLD = "\033[1m"
+_TAGS = {"debug": "..", "info": "->", "warn": "!!", "error": "xx", "ok": "**"}
+
+
+def _enabled(stream: TextIO | None = None) -> bool:
+    stream = stream or sys.stderr
+    return stream.isatty() and os.environ.get("NO_COLOR") is None
+
+
+def tag(level: str, *, stream: TextIO | None = None) -> str:
+    tag_text = _TAGS[level]
+    if _enabled(stream):
+        return f"{_COLORS[level]}{tag_text}{_RESET}"
+    return tag_text
+
+
+def bold(text: str, *, stream: TextIO | None = None) -> str:
+    if _enabled(stream):
+        return f"{_BOLD}{text}{_RESET}"
+    return text
+
+
+def _emit(level: str, msg: str) -> None:
+    sys.stderr.write(f"{tag(level)} {msg}\n")
+    sys.stderr.flush()
+
+
+def field(label: str, value: str, *, stream: TextIO | None = None) -> str:
+    return f"{bold(label, stream=stream)}: {value}"
+
+
+def debug(msg: str) -> None:
+    if os.environ.get("ORCHID_DEBUG"):
+        _emit("debug", msg)
+
+
+def info(msg: str) -> None:
+    _emit("info", msg)
+
+
+def info_field(label: str, value: str) -> None:
+    _emit("info", field(label, value))
+
+
+def warn(msg: str) -> None:
+    _emit("warn", msg)
+
+
+def error(msg: str) -> None:
+    _emit("error", msg)
+
+
+def ok(msg: str) -> None:
+    _emit("ok", msg)
+
+
+def ok_field(label: str, value: str) -> None:
+    _emit("ok", field(label, value))
@@ -1,26 +0,0 @@
-use std::{io::IsTerminal, sync::LazyLock};
-
-static IS_STDERR_TERMINAL: LazyLock<bool> = LazyLock::new(|| std::io::stderr().is_terminal());
-
-const ARROW: &str = "==>";
-
-fn emit(color: &str, action: &str, details: &str) {
-    if *IS_STDERR_TERMINAL {
-        eprintln!("\x1b[{color}m{ARROW} \x1b[1m{action} \x1b[0m{details}");
-    } else {
-        eprintln!("{ARROW} {action} {details}");
-    }
-}
-
-pub fn step(action: &str, details: &str) {
-    emit("1;34", action, details);
-}
-
-pub fn skip(action: &str, details: &str) {
-    emit("1;33", action, details);
-}
-
-#[allow(dead_code)]
-pub fn info(action: &str, details: &str) {
-    emit("1;32", action, details);
-}
@@ -1,16 +0,0 @@
-mod builder;
-mod cli;
-mod config;
-mod container;
-mod eval;
-mod graph;
-mod layout;
-mod log;
-mod options;
-mod phase;
-mod recipe;
-
-fn main() -> anyhow::Result<()> {
-    container::install_signals()?;
-    cli::run()
-}
@@ -1,35 +0,0 @@
-use allocative::Allocative;
-use starlark::values::{Heap, OwnedFrozenValue, StarlarkValue, Value};
-use starlark_derive::{NoSerialize, ProvidesStaticType, starlark_value};
-use std::collections::HashMap;
-
-#[derive(Debug, Clone, Allocative, ProvidesStaticType, NoSerialize)]
-pub struct Options {
-    entries: HashMap<String, OwnedFrozenValue>,
-}
-
-impl Options {
-    pub fn new(entries: HashMap<String, OwnedFrozenValue>) -> Self {
-        Self { entries }
-    }
-}
-
-impl std::fmt::Display for Options {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "options")
-    }
-}
-
-starlark::starlark_simple_value!(Options);
-
-#[starlark_value(type = "options")]
-impl<'v> StarlarkValue<'v> for Options {
-    fn get_attr(&self, attribute: &str, _heap: &'v Heap) -> Option<Value<'v>> {
-        let owned = self.entries.get(attribute)?;
-        // SAFETY: `self` is kept alive by the module heap into which it was
-        // allocated, and `owned` holds an Arc to its source frozen heap. The
-        // returned Value therefore remains valid for as long as the receiving
-        // module is alive.
-        Some(unsafe { owned.unchecked_frozen_value() }.to_value())
-    }
-}
@@ -1,389 +0,0 @@
-use std::{cell::RefCell, collections::BTreeMap, rc::Rc};
-
-use allocative::Allocative;
-use anyhow::anyhow;
-use starlark::{
-    collections::SmallMap,
-    environment::{Methods, MethodsBuilder, MethodsStatic, Module},
-    eval::Evaluator,
-    values::{
-        Heap, OwnedFrozenValue, StarlarkValue, Value, ValueLike, list::UnpackList, none::NoneType,
-    },
-};
-use starlark_derive::{NoSerialize, ProvidesStaticType, starlark_module, starlark_value};
-
-use crate::container::Container;
-
-thread_local! {
-    static CURRENT: RefCell<Option<PhaseRuntime>> = const { RefCell::new(None) };
-}
-
-#[derive(Clone)]
-pub struct PhaseRuntime {
-    pub container: Rc<RefCell<Container>>,
-    pub base_path: String,
-    pub base_env: Vec<(String, String)>,
-}
-
-pub struct PhaseRuntimeGuard;
-
-impl PhaseRuntimeGuard {
-    pub fn enter(runtime: PhaseRuntime) -> Self {
-        CURRENT.with(|cell| {
-            let prev = cell.borrow_mut().replace(runtime);
-            assert!(prev.is_none(), "phase runtime already set");
-        });
-        Self
-    }
-}
-
-impl Drop for PhaseRuntimeGuard {
-    fn drop(&mut self) {
-        CURRENT.with(|cell| {
-            cell.borrow_mut().take();
-        });
-    }
-}
-
-fn with_current<R>(f: impl FnOnce(&PhaseRuntime) -> R) -> anyhow::Result<R> {
-    CURRENT.with(|cell| {
-        let borrow = cell.borrow();
-        let runtime = borrow
-            .as_ref()
-            .ok_or_else(|| anyhow!("ctx.run called outside of a phase invocation"))?;
-        Ok(f(runtime))
-    })
-}
-
-#[derive(Debug, Clone, Allocative, ProvidesStaticType, NoSerialize)]
-pub struct Path {
-    inner: String,
-}
-
-impl Path {
-    pub fn new(inner: impl Into<String>) -> Self {
-        Self {
-            inner: inner.into(),
-        }
-    }
-
-    pub fn as_str(&self) -> &str {
-        &self.inner
-    }
-}
-
-fn join_paths(base: &str, rhs: &str) -> String {
-    let trimmed = base.trim_end_matches('/');
-    if trimmed.is_empty() {
-        format!("/{rhs}")
-    } else {
-        format!("{trimmed}/{rhs}")
-    }
-}
-
-fn coerce_path_string(value: Value<'_>) -> anyhow::Result<String> {
-    if let Some(s) = value.unpack_str() {
-        return Ok(s.to_owned());
-    }
-    if let Some(p) = value.downcast_ref::<Path>() {
-        return Ok(p.inner.clone());
-    }
-    if let Some(s) = value.downcast_ref::<SourceDir>() {
-        return Ok(s.default.clone());
-    }
-    anyhow::bail!("expected a string or path, got `{}`", value.get_type())
-}
-
-impl std::fmt::Display for Path {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        f.write_str(&self.inner)
-    }
-}
-
-starlark::starlark_simple_value!(Path);
-
-#[starlark_value(type = "path")]
-impl<'v> StarlarkValue<'v> for Path {
-    fn div(&self, other: Value<'v>, heap: &'v Heap) -> starlark::Result<Value<'v>> {
-        let rhs = coerce_path_string(other).map_err(starlark::Error::new_other)?;
-        Ok(heap.alloc(Path::new(join_paths(&self.inner, &rhs))))
-    }
-
-    fn add(&self, rhs: Value<'v>, heap: &'v Heap) -> Option<starlark::Result<Value<'v>>> {
-        let suffix = rhs.unpack_str()?;
-        Some(Ok(heap.alloc(format!("{}{}", self.inner, suffix))))
-    }
-
-    fn radd(&self, lhs: Value<'v>, heap: &'v Heap) -> Option<starlark::Result<Value<'v>>> {
-        let prefix = lhs.unpack_str()?;
-        Some(Ok(heap.alloc(format!("{}{}", prefix, self.inner))))
-    }
-
-    fn equals(&self, other: Value<'v>) -> starlark::Result<bool> {
-        Ok(other
-            .downcast_ref::<Self>()
-            .map(|o| o.inner == self.inner)
-            .unwrap_or(false))
-    }
-}
-
-#[derive(Debug, Clone, Allocative, ProvidesStaticType, NoSerialize)]
-pub struct SourceDir {
-    default: String,
-    entries: BTreeMap<String, String>,
-}
-
-impl SourceDir {
-    pub fn single(path: impl Into<String>) -> Self {
-        Self {
-            default: path.into(),
-            entries: BTreeMap::new(),
-        }
-    }
-
-    pub fn named<I, K, V>(entries: I) -> Self
-    where
-        I: IntoIterator<Item = (K, V)>,
-        K: Into<String>,
-        V: Into<String>,
-    {
-        let entries: BTreeMap<String, String> = entries
-            .into_iter()
-            .map(|(k, v)| (k.into(), v.into()))
-            .collect();
-        let default = entries
-            .values()
-            .next()
-            .cloned()
-            .unwrap_or_else(|| "/sources".to_owned());
-        Self { default, entries }
-    }
-}
-
-impl std::fmt::Display for SourceDir {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        f.write_str(&self.default)
-    }
-}
-
-starlark::starlark_simple_value!(SourceDir);
-
-#[starlark_value(type = "source_dir")]
-impl<'v> StarlarkValue<'v> for SourceDir {
-    fn at(&self, index: Value<'v>, heap: &'v Heap) -> starlark::Result<Value<'v>> {
-        let key = index.unpack_str().ok_or_else(|| {
-            starlark::Error::new_other(anyhow!("source_dir index must be a string"))
-        })?;
-        let path = self.entries.get(key).ok_or_else(|| {
-            starlark::Error::new_other(anyhow!(
-                "no source named `{key}` (available: {})",
-                if self.entries.is_empty() {
-                    "<none>".to_owned()
-                } else {
-                    self.entries
-                        .keys()
-                        .map(String::as_str)
-                        .collect::<Vec<_>>()
-                        .join(", ")
-                }
-            ))
-        })?;
-        Ok(heap.alloc(path.as_str()))
-    }
-
-    fn add(&self, rhs: Value<'v>, heap: &'v Heap) -> Option<starlark::Result<Value<'v>>> {
-        let suffix = rhs.unpack_str()?;
-        Some(Ok(heap.alloc(format!("{}{}", self.default, suffix))))
-    }
-
-    fn radd(&self, lhs: Value<'v>, heap: &'v Heap) -> Option<starlark::Result<Value<'v>>> {
-        let prefix = lhs.unpack_str()?;
-        Some(Ok(heap.alloc(format!("{}{}", prefix, self.default))))
-    }
-
-    fn div(&self, other: Value<'v>, heap: &'v Heap) -> starlark::Result<Value<'v>> {
-        let rhs = coerce_path_string(other).map_err(starlark::Error::new_other)?;
-        Ok(heap.alloc(Path::new(join_paths(&self.default, &rhs))))
-    }
-}
-
-#[derive(Debug, Clone, Allocative, ProvidesStaticType, NoSerialize)]
-pub struct PhaseContext {
-    source_dir: SourceDir,
-    build_dir: String,
-    sysroot: String,
-    files: Option<String>,
-    jobs: i32,
-}
-
-impl PhaseContext {
-    pub fn new(source_dir: SourceDir, jobs: i32, files: Option<String>) -> Self {
-        Self {
-            source_dir,
-            build_dir: "/build".to_owned(),
-            sysroot: "/sysroot".to_owned(),
-            files,
-            jobs,
-        }
-    }
-}
-
-impl std::fmt::Display for PhaseContext {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "ctx")
-    }
-}
-
-starlark::starlark_simple_value!(PhaseContext);
-
-#[starlark_value(type = "phase_context")]
-impl<'v> StarlarkValue<'v> for PhaseContext {
-    fn get_attr(&self, attr: &str, heap: &'v Heap) -> Option<Value<'v>> {
-        Some(match attr {
-            "source_dir" => heap.alloc(self.source_dir.clone()),
-            "build_dir" => heap.alloc(Path::new(self.build_dir.clone())),
-            "sysroot" => heap.alloc(Path::new(self.sysroot.clone())),
-            "files" => heap.alloc(Path::new(self.files.as_ref()?.clone())),
-            "jobs" => heap.alloc(self.jobs),
-            _ => return None,
-        })
-    }
-
-    fn has_attr(&self, attr: &str, _heap: &'v Heap) -> bool {
-        match attr {
-            "source_dir" | "build_dir" | "sysroot" | "jobs" | "run" => true,
-            "files" => self.files.is_some(),
-            _ => false,
-        }
-    }
-
-    fn dir_attr(&self) -> Vec<String> {
-        let mut attrs = vec![
-            "source_dir".to_owned(),
-            "build_dir".to_owned(),
-            "sysroot".to_owned(),
-            "jobs".to_owned(),
-            "run".to_owned(),
-        ];
-        if self.files.is_some() {
-            attrs.push("files".to_owned());
-        }
-        attrs
-    }
-
-    fn get_methods() -> Option<&'static Methods> {
-        static RES: MethodsStatic = MethodsStatic::new();
-        RES.methods(phase_context_methods)
-    }
-}
-
-#[starlark_module]
-fn phase_context_methods(builder: &mut MethodsBuilder) {
-    fn run<'v>(
-        #[starlark(this)] _this: Value<'v>,
-        #[starlark(require = pos)] argv: UnpackList<Value<'v>>,
-        #[starlark(require = named)] env: Option<SmallMap<String, Value<'v>>>,
-        #[starlark(require = named)] cwd: Option<String>,
-    ) -> anyhow::Result<NoneType> {
-        let argv: Vec<String> = argv
-            .items
-            .iter()
-            .map(|v| coerce_path_string(*v))
-            .collect::<anyhow::Result<Vec<_>>>()?;
-        let mut env_strings: SmallMap<String, String> = SmallMap::new();
-        if let Some(env) = env {
-            for (k, v) in env {
-                env_strings.insert(k, coerce_path_string(v)?);
-            }
-        }
-        run_in_container(&argv, env_strings, cwd.as_deref().unwrap_or("/build"))?;
-        Ok(NoneType)
-    }
-}
-
-fn run_in_container(
-    argv: &[String],
-    env_overrides: SmallMap<String, String>,
-    cwd: &str,
-) -> anyhow::Result<()> {
-    let (container, env) = with_current(|runtime| {
-        let mut env: Vec<(String, String)> = runtime
-            .base_env
-            .iter()
-            .cloned()
-            .map(|(k, v)| {
-                if k == "PATH" {
-                    (k, runtime.base_path.clone())
-                } else {
-                    (k, v)
-                }
-            })
-            .collect();
-        for (k, v) in env_overrides {
-            if let Some(slot) = env.iter_mut().find(|(existing, _)| existing == &k) {
-                slot.1 = v;
-            } else {
-                env.push((k, v));
-            }
-        }
-        (runtime.container.clone(), env)
-    })?;
-    container.borrow().exec(argv, &env, cwd)
-}
-
-#[derive(Debug, Clone, Allocative, ProvidesStaticType, NoSerialize)]
-pub struct PackageContext {
-    dest_dir: String,
-}
-
-impl PackageContext {
-    pub fn new(dest_dir: String) -> Self {
-        Self { dest_dir }
-    }
-}
-
-impl std::fmt::Display for PackageContext {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "pkg")
-    }
-}
-
-starlark::starlark_simple_value!(PackageContext);
-
-#[starlark_value(type = "package_context")]
-impl<'v> StarlarkValue<'v> for PackageContext {
-    fn get_attr(&self, attr: &str, heap: &'v Heap) -> Option<Value<'v>> {
-        match attr {
-            "dest_dir" => Some(heap.alloc(Path::new(self.dest_dir.clone()))),
-            _ => None,
-        }
-    }
-
-    fn has_attr(&self, attr: &str, _heap: &'v Heap) -> bool {
-        attr == "dest_dir"
-    }
-
-    fn dir_attr(&self) -> Vec<String> {
-        vec!["dest_dir".to_owned()]
-    }
-}
-
-pub fn invoke_phase(func: &OwnedFrozenValue, args: &[PhaseArg]) -> anyhow::Result<()> {
-    let module = Module::new();
-    let mut eval = Evaluator::new(&module);
-    let allocated: Vec<Value<'_>> = args
-        .iter()
-        .map(|arg| match arg {
-            PhaseArg::Ctx(ctx) => module.heap().alloc(ctx.clone()),
-            PhaseArg::Pkg(pkg) => module.heap().alloc(pkg.clone()),
-        })
-        .collect();
-    eval.eval_function(func.value(), &allocated, &[])
-        .map_err(|err| anyhow!("{err}"))?;
-    Ok(())
-}
-
-pub enum PhaseArg {
-    Ctx(PhaseContext),
-    Pkg(PackageContext),
-}
@@ -0,0 +1,171 @@
+import graphlib
+from dataclasses import dataclass
+from pathlib import Path
+
+from src.layout import Layout
+from src.recipe import Recipe, RecipeSet
+
+BUILD_PHASES = ("prepare", "configure", "build")
+PHASE_STAMPS = {
+    "prepare": "prepared",
+    "configure": "configured",
+    "build": "built",
+}
+
+
+def _key(r: Recipe) -> str:
+    return r.key  # "host:<name>" or "<name>"
+
+
+def transitive_host_deps(rs: RecipeSet, r: Recipe) -> list[str]:
+    """Returns transitive host_deps for `r`, in topological order (deepest first)."""
+    seen: dict[str, Recipe] = {}
+    order: list[str] = []
+
+    def visit(name: str) -> None:
+        if name in seen:
+            return
+        h = rs.host.get(name)
+        if h is None:
+            raise KeyError(f"unknown host dep: {name}")
+        seen[name] = h
+        for hh in h.host_deps:
+            visit(hh)
+        order.append(name)
+
+    for d in r.host_deps:
+        visit(d)
+    return order
+
+
+def is_built(layout: Layout, r: Recipe) -> bool:
+    if r.kind == "host":
+        return layout.host_pkg_marker(r.name, r.version, r.revision).is_file()
+    for out in r.outputs:
+        if not layout.apk_path(out, r.version, r.revision).is_file():
+            return False
+    return True
+
+
+def stamp_dir(layout: Layout, r: Recipe) -> Path:
+    wd = layout.build_workdir(r.name if r.kind == "target" else f"host-{r.name}")
+    return wd / ".orchid-stamps"
+
+
+def stamp_token(r: Recipe) -> str:
+    return f"{r.version}-r{r.revision}\n"
+
+
+def stamp_valid(layout: Layout, r: Recipe, phase: str) -> bool:
+    name = PHASE_STAMPS.get(phase)
+    if name is None:
+        return False
+    p = stamp_dir(layout, r) / name
+    try:
+        return p.read_text() == stamp_token(r)
+    except FileNotFoundError:
+        return False
+
+
+def planned_stages(
+    layout: Layout, r: Recipe, *, forced: bool = False
+) -> tuple[str, ...]:
+    stages: list[str] = []
+    for phase in BUILD_PHASES:
+        if phase in r.phases and (forced or not stamp_valid(layout, r, phase)):
+            stages.append(phase)
+    if "install" in r.phases:
+        stages.append("install")
+    stages.append("package" if r.kind == "target" else "finalize")
+    return tuple(stages)
+
+
+@dataclass
+class Plan:
+    order: list[str]  # ordered list of recipe keys
+    recipes: dict[str, Recipe]  # all referenced recipes
+    forced: set[str]  # keys to rebuild even if built
+    stages: dict[str, tuple[str, ...]]  # stages each planned recipe will run
+
+    def __iter__(self):
+        return iter(self.order)
+
+
+def _collect_targets(rs: RecipeSet, requested: list[str] | None) -> list[Recipe]:
+    if not requested:
+        return [r for r in rs.target.values() if r.enabled] + [
+            r for r in rs.host.values() if r.enabled
+        ]
+    out: list[Recipe] = []
+    for spec in requested:
+        r = rs.get(spec)
+        if not r.enabled:
+            raise ValueError(f"{spec}: disabled by build_if = False")
+        out.append(r)
+    return out
+
+
+def build_plan(
+    rs: RecipeSet, layout: Layout, requested: list[str] | None, *, rebuild: bool = False
+) -> Plan:
+    seen: dict[str, Recipe] = {}
+    ts: graphlib.TopologicalSorter[str] = graphlib.TopologicalSorter()
+    forced: set[str] = set()
+
+    def add(r: Recipe) -> None:
+        k = _key(r)
+        if k in seen:
+            return
+        seen[k] = r
+        deps: list[str] = []
+        for h in r.host_deps:
+            hr = rs.host.get(h)
+            if hr is None:
+                raise KeyError(f"{r.name}: unknown host dep {h!r}")
+            if not hr.enabled:
+                raise ValueError(f"{r.name}: host dep {h!r} disabled by build_if")
+            add(hr)
+            deps.append(_key(hr))
+        if r.kind == "target":
+            for d in (*r.deps, *r.run_deps):
+                tr = rs.target.get(d)
+                if tr is None:
+                    raise KeyError(f"{r.name}: unknown dep {d!r}")
+                if not tr.enabled:
+                    raise ValueError(f"{r.name}: dep {d!r} disabled by build_if")
+                add(tr)
+                deps.append(_key(tr))
+        else:
+            # host recipes may declare target `deps` that need to land in /sysroot
+            for d in r.deps:
+                tr = rs.target.get(d)
+                if tr is None:
+                    raise KeyError(f"host:{r.name}: unknown target dep {d!r}")
+                if not tr.enabled:
+                    raise ValueError(f"host:{r.name}: dep {d!r} disabled by build_if")
+                add(tr)
+                deps.append(_key(tr))
+        ts.add(k, *deps)
+
+    requested_recipes = _collect_targets(rs, requested)
+    for r in requested_recipes:
+        add(r)
+        if rebuild:
+            forced.add(_key(r))
+
+    order = list(ts.static_order())
+
+    stages: dict[str, tuple[str, ...]] = {}
+    final_order: list[str] = []
+    for k in order:
+        r = seen[k]
+        if k in forced:
+            stages[k] = planned_stages(layout, r, forced=True)
+            final_order.append(k)
+            continue
+        if is_built(layout, r):
+            continue
+        stages[k] = planned_stages(layout, r)
+        final_order.append(k)
+
+    return Plan(order=final_order, recipes=seen, forced=forced, stages=stages)
@@ -0,0 +1,49 @@
+import importlib.util
+from pathlib import Path
+from typing import Any
+
+from src.layout import Layout
+
+REQUIRED_KEYS = ("arch", "triple", "container_image")
+
+
+def _load_module(path: Path, name: str):
+    spec = importlib.util.spec_from_file_location(name, path)
+    if spec is None or spec.loader is None:
+        raise RuntimeError(f"cannot load profile module {path}")
+    mod = importlib.util.module_from_spec(spec)
+    spec.loader.exec_module(mod)
+    return mod
+
+
+def load_profile(layout: Layout) -> dict[str, Any]:
+    link = layout.profile_link
+    if not link.exists():
+        raise FileNotFoundError(f"{link} missing a profile")
+    target = link.resolve()
+    if not target.is_file():
+        raise FileNotFoundError(f"profile {target.name}: missing config.py")
+    mod = _load_module(target, f"orchid_profile_{target.name}")
+    if not hasattr(mod, "profile"):
+        raise AttributeError(f"profile {target.name}: config.py must define profile()")
+    data = mod.profile()
+    if not isinstance(data, dict):
+        raise TypeError(f"profile {target.name}: profile() must return a dict")
+    missing = [k for k in REQUIRED_KEYS if k not in data]
+    if missing:
+        raise ValueError(f"profile {target.name}: missing keys {missing}")
+    data["__name__"] = target.name
+    return data
+
+
+def init_build_dir(build: Path, repo: Path, profile_name: str) -> None:
+    profile_src = repo / "profiles" / (profile_name + ".py")
+    if not (profile_src).is_file():
+        raise FileNotFoundError(f"profile {profile_name!r} not found at {profile_src}")
+    build.mkdir(parents=True, exist_ok=False)
+    link = build / "profile"
+    # Use relative symlink so the build dir can be moved with the repo.
+    import os
+
+    rel = Path(os.path.relpath(profile_src, build))
+    link.symlink_to(rel)
@@ -0,0 +1,258 @@
+import importlib
+import importlib.util
+import pkgutil
+from dataclasses import dataclass
+from functools import cache
+from pathlib import Path, PurePosixPath
+from typing import Any, Callable
+
+from src import source as src_mod
+from src.layout import Layout
+from src.source import Subpackage, Tarball, subpackage, tarball, git
+
+PHASE_NAMES = ("prepare", "configure", "build", "install")
+LIB_DIR = Path(__file__).with_name("lib")
+
+
+@dataclass
+class Recipe:
+    name: str
+    kind: str  # "target" | "host"
+    dir: Path  # recipe directory or parent (for pure form)
+    pure: bool
+    version: str
+    revision: int
+    description: str
+    license: str
+    url: str
+    maintainer: str
+    sources: dict[str | None, Tarball | src_mod.Git]  # key=None for single source
+    host_deps: tuple[str, ...]
+    deps: tuple[str, ...]
+    run_deps: tuple[str, ...]
+    subpackages: tuple[Subpackage, ...]
+    phases: dict[str, Callable[[Any], None]]
+    enabled: bool
+
+    @property
+    def key(self) -> str:
+        return f"host:{self.name}" if self.kind == "host" else self.name
+
+    @property
+    def patches_dir(self) -> Path | None:
+        if self.pure:
+            return None
+        p = self.dir / "patches"
+        return p if p.is_dir() else None
+
+    @property
+    def files_dir(self) -> Path | None:
+        if self.pure:
+            return None
+        p = self.dir / "files"
+        return p if p.is_dir() else None
+
+    @property
+    def outputs(self) -> list[str]:
+        if self.kind == "host":
+            return [self.name]
+        return [self.name, *(s.name for s in self.subpackages)]
+
+
+# Import everything in lib/ for recipes
+@cache
+def _lib_symbols() -> dict:
+    ns = {}
+    if not LIB_DIR.is_dir():
+        return ns
+
+    for info in sorted(pkgutil.iter_modules([str(LIB_DIR)]), key=lambda i: i.name):
+        if info.ispkg:
+            continue
+        mod = importlib.import_module(f"src.lib.{info.name}")
+        names = getattr(mod, "__all__", None)
+        if names is None:
+            names = [n for n in mod.__dict__ if not n.startswith("_")]
+        for n in names:
+            ns[n] = getattr(mod, n)
+    return ns
+
+
+# Symbols which are injected into the recipe
+def _builtins(profile: dict) -> dict:
+    return {
+        **_lib_symbols(),
+        "tarball": tarball,
+        "git": git,
+        "subpackage": subpackage,
+        "path": PurePosixPath,
+        "profile": profile,
+    }
+
+
+def _load_module(path: Path, ns: dict):
+    spec = importlib.util.spec_from_file_location(
+        f"orchid_recipe_{path.stem}_{id(path)}", path
+    )
+    if spec is None or spec.loader is None:
+        raise RuntimeError(f"cannot load {path}")
+    mod = importlib.util.module_from_spec(spec)
+    mod.__dict__.update(ns)
+    spec.loader.exec_module(mod)
+    return mod
+
+
+def _plain_field(mod, recipe_name: str, field_name: str) -> str:
+    value = getattr(mod, field_name, "")
+    if value is None:
+        return ""
+    if not isinstance(value, str):
+        raise TypeError(f"{recipe_name}: '{field_name}' must be a string")
+    return value
+
+
+def _load_one(
+    name: str, kind: str, recipe_file: Path, recipe_dir: Path, pure: bool, profile: dict
+) -> Recipe | None:
+    mod = _load_module(recipe_file, _builtins(profile))
+
+    version = getattr(mod, "version", None)
+    if not isinstance(version, str) or not version:
+        raise ValueError(f"{name}: 'version' (str) required")
+    revision = int(getattr(mod, "revision", 1))
+    if hasattr(mod, "metadata"):
+        raise TypeError(
+            f"{name}: use plain description/license/url/maintainer fields, not metadata = meta(...)"
+        )
+    description = _plain_field(mod, name, "description")
+    license = _plain_field(mod, name, "license")
+    url = _plain_field(mod, name, "url")
+    maintainer = _plain_field(mod, name, "maintainer")
+
+    single = getattr(mod, "source", None)
+    multi = getattr(mod, "sources", None)
+    if single is not None and multi is not None:
+        raise ValueError(f"{name}: define either 'source' or 'sources', not both")
+    sources = {}
+    if single is not None:
+        if not isinstance(single, (Tarball, src_mod.Git)):
+            raise TypeError(f"{name}: 'source' must be tarball()/git()")
+        sources[None] = single
+    elif multi is not None:
+        if not isinstance(multi, dict) or not multi:
+            raise TypeError(f"{name}: 'sources' must be a non-empty dict")
+        multi_items = list(multi.items())
+        for k, v in multi_items:
+            if not isinstance(k, str) or not k:
+                raise TypeError(f"{name}: 'sources' keys must be non-empty strings")
+            if not isinstance(v, (Tarball, src_mod.Git)):
+                raise TypeError(f"{name}: source {k!r} must be tarball()/git()")
+        if len(multi_items) == 1:
+            sources[None] = multi_items[0][1]
+        else:
+            for k, v in multi_items:
+                sources[k] = v
+    else:
+        raise ValueError(f"{name}: 'source' or 'sources' required")
+
+    if pure:
+        for s in sources.values():
+            if s.patches:
+                raise ValueError(
+                    f"{name}: pure-form recipe cannot declare patches; convert to {name}/recipe.py + patches/"
+                )
+
+    host_deps = tuple(getattr(mod, "host_deps", ()) or ())
+    deps = tuple(getattr(mod, "deps", ()) or ())
+    run_deps = tuple(getattr(mod, "run_deps", ()) or ())
+    subs = tuple(getattr(mod, "subpackages", ()) or ())
+    for s in subs:
+        if not isinstance(s, Subpackage):
+            raise TypeError(
+                f"{name}: subpackages entries must be subpackage(...) values"
+            )
+    if kind == "host" and subs:
+        raise ValueError(f"{name}: host recipes do not support subpackages")
+
+    phases: dict[str, Callable] = {}
+    for pn in PHASE_NAMES:
+        fn = getattr(mod, pn, None)
+        if fn is not None:
+            if not callable(fn):
+                raise TypeError(f"{name}: '{pn}' must be a function")
+            phases[pn] = fn
+    if kind == "target" and "build" not in phases and "install" not in phases:
+        # Purely declarative pkgs are unusual but allowed
+        pass
+
+    enabled = bool(getattr(mod, "build_if", True))
+
+    return Recipe(
+        name=name,
+        kind=kind,
+        dir=recipe_dir,
+        pure=pure,
+        version=version,
+        revision=revision,
+        description=description,
+        license=license,
+        url=url,
+        maintainer=maintainer,
+        sources=sources,
+        host_deps=host_deps,
+        deps=deps,
+        run_deps=run_deps,
+        subpackages=subs,
+        phases=phases,
+        enabled=enabled,
+    )
+
+
+def _discover(root: Path, kind: str, profile: dict) -> dict[str, Recipe]:
+    out: dict[str, Recipe] = {}
+    if not root.is_dir():
+        return out
+    for entry in sorted(root.iterdir()):
+        if entry.name.startswith(".") or entry.name.startswith("_"):
+            continue
+        if entry.is_file() and entry.suffix == ".py":
+            name = entry.stem
+            r = _load_one(name, kind, entry, entry.parent, pure=True, profile=profile)
+        elif entry.is_dir():
+            rf = entry / "recipe.py"
+            if not rf.is_file():
+                continue
+            r = _load_one(entry.name, kind, rf, entry, pure=False, profile=profile)
+        else:
+            continue
+        if r is None:
+            continue
+        if r.name in out:
+            raise ValueError(f"duplicate {kind} recipe: {r.name}")
+        out[r.name] = r
+    return out
+
+
+@dataclass
+class RecipeSet:
+    target: dict[str, Recipe]
+    host: dict[str, Recipe]
+
+    def get(self, key: str) -> Recipe:
+        if key.startswith("host:"):
+            n = key[5:]
+            if n not in self.host:
+                raise KeyError(f"host recipe not found: {n}")
+            return self.host[n]
+        if key not in self.target:
+            raise KeyError(f"recipe not found: {key}")
+        return self.target[key]
+
+    def all(self) -> list[Recipe]:
+        return [*self.target.values(), *self.host.values()]
+
+
+def load_recipes(layout: Layout, profile: dict) -> RecipeSet:
+    target = _discover(layout.recipes_dir, "target", profile)
+    host = _discover(layout.host_recipes_dir, "host", profile)
+    return RecipeSet(target=target, host=host)
@@ -1,71 +0,0 @@
-use allocative::Allocative;
-use starlark::values::StarlarkValue;
-use starlark_derive::{NoSerialize, ProvidesStaticType, starlark_value};
-
-#[derive(Debug, Clone, Allocative, ProvidesStaticType, NoSerialize)]
-pub struct Metadata {
-    maintainer: Option<String>,
-    description: Option<String>,
-    license: Option<String>,
-    website: Option<String>,
-}
-
-impl std::fmt::Display for Metadata {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "metadata")
-    }
-}
-
-starlark::starlark_simple_value!(Metadata);
-
-#[starlark_value(type = "metadata")]
-impl<'v> StarlarkValue<'v> for Metadata {}
-
-impl Metadata {
-    pub fn new(
-        maintainer: Option<String>,
-        description: Option<String>,
-        license: Option<String>,
-        website: Option<String>,
-    ) -> Self {
-        Self {
-            maintainer,
-            description,
-            license,
-            website,
-        }
-    }
-
-    pub fn maintainer(&self) -> Option<&str> {
-        self.maintainer.as_deref()
-    }
-
-    pub fn description(&self) -> Option<&str> {
-        self.description.as_deref()
-    }
-
-    pub fn license(&self) -> Option<&str> {
-        self.license.as_deref()
-    }
-
-    pub fn website(&self) -> Option<&str> {
-        self.website.as_deref()
-    }
-
-    pub fn inherit(&self, from: &Self) -> Self {
-        Self {
-            maintainer: self
-                .maintainer
-                .as_ref()
-                .or(from.maintainer.as_ref())
-                .cloned(),
-            description: self
-                .description
-                .as_ref()
-                .or(from.description.as_ref())
-                .cloned(),
-            license: self.license.as_ref().or(from.license.as_ref()).cloned(),
-            website: self.website.as_ref().or(from.website.as_ref()).cloned(),
-        }
-    }
-}
@@ -1,603 +0,0 @@
-mod metadata;
-mod source;
-mod subpackage;
-
-use anyhow::{Context, bail};
-use starlark::{
-    environment::{FrozenModule, Module},
-    eval::Evaluator,
-    values::{
-        OwnedFrozenValue, UnpackValue, ValueLike, dict::DictRef, list::ListRef,
-        typing::StarlarkCallable,
-    },
-};
-use std::{
-    collections::{HashMap, HashSet},
-    path::{Path, PathBuf},
-};
-use walkdir::WalkDir;
-
-use crate::{
-    eval::{self, ExtractError},
-    options::Options,
-};
-
-pub use metadata::Metadata;
-pub use source::{GitSource, Source, TarballSource};
-pub use subpackage::Subpackage;
-
-#[derive(Clone, Copy, Debug, PartialEq, Eq)]
-pub enum RecipeKind {
-    Package,
-    HostPackage,
-}
-
-impl RecipeKind {
-    pub fn key(self, name: &str) -> String {
-        match self {
-            Self::Package => name.to_string(),
-            Self::HostPackage => format!("host:{name}"),
-        }
-    }
-
-    pub fn slug(self, name: &str) -> String {
-        self.key(name).replace(':', "-")
-    }
-}
-
-#[derive(Debug)]
-pub enum Sources {
-    Single(source::Source),
-    Multiple(HashMap<String, source::Source>),
-}
-
-impl Sources {
-    pub fn entries(&self) -> Vec<(Option<&str>, &source::Source)> {
-        match self {
-            Self::Single(source) => vec![(None, source)],
-            Self::Multiple(sources) => {
-                let mut entries = sources
-                    .iter()
-                    .map(|(name, source)| (Some(name.as_str()), source))
-                    .collect::<Vec<_>>();
-                entries.sort_by_key(|(name, _)| *name);
-                entries
-            }
-        }
-    }
-}
-
-pub struct Recipe {
-    /// Recipe name without namespace prefix.
-    name: String,
-    /// Path to the recipe's .star file.
-    path: PathBuf,
-    /// What kind of a recipe is that?
-    kind: RecipeKind,
-    /// Version shared by every package output of this recipe.
-    version: String,
-    /// Revision shared by every package output of this recipe.
-    revision: i32,
-    /// List of sources required to build this recipe.
-    sources: Sources,
-    /// All packages produced by this recipe.
-    /// This is empty for host recipes.
-    outputs: Vec<OutputPackage>,
-    /// Host packages requires for this recipe.
-    host_deps: Vec<String>,
-    /// Packages installed to the system root during build of the recipe, but
-    /// not listed as part of the `apk` dependencies.
-    build_deps: Vec<String>,
-    /// Packages installed to the system root during build of the recipe AND
-    /// listed as part of the `apk` dependencies.
-    deps: Vec<String>,
-    /// Packages NOT installed to the system root during build, only listed
-    /// as part of the `apk` dependencies.
-    run_deps: Vec<String>,
-    /// Starlark phase functions defined by the recipe.
-    phases: RecipePhases,
-}
-
-impl Recipe {
-    pub fn load(
-        path: &Path,
-        name: &str,
-        kind: RecipeKind,
-        options: &Options,
-        lib: Option<&FrozenModule>,
-    ) -> anyhow::Result<Option<Self>> {
-        let module = eval::eval_file(path, Some(options), lib)
-            .with_context(|| format!("evaluating recipe {}", path.display()))?;
-
-        if !Self::eval_build_if(&module)? {
-            return Ok(None);
-        }
-
-        let version = eval::extract_string(&module, "version")
-            .map_err(|e| anyhow::anyhow!("field `version`: {e}"))?;
-
-        let revision = match eval::extract_i32(&module, "revision") {
-            Ok(v) => v,
-            Err(ExtractError::NotFound) => 1,
-            Err(e) => bail!("field `revision`: {e}"),
-        };
-
-        let metadata = match module.get("metadata") {
-            None => Metadata::new(None, None, None, None),
-            Some(value) => value
-                .downcast_ref::<Metadata>()
-                .ok_or_else(|| anyhow::anyhow!("field `metadata`: expected a metadata value"))?
-                .clone(),
-        };
-
-        let source_value = module.get("source");
-        let sources_value = module.get("sources");
-        let sources = match (source_value, sources_value) {
-            (None, None) => bail!("recipe must define either `source` or `sources`"),
-            (Some(_), Some(_)) => {
-                bail!("recipe must define exactly one of `source` or `sources`, not both")
-            }
-            (Some(value), None) => {
-                let source = value
-                    .downcast_ref::<Source>()
-                    .ok_or_else(|| anyhow::anyhow!("field `source`: expected a source value"))?
-                    .clone();
-                Sources::Single(source)
-            }
-            (None, Some(value)) => {
-                let dict = DictRef::from_value(value).ok_or_else(|| {
-                    anyhow::anyhow!("field `sources`: expected a dict of name -> source")
-                })?;
-                if dict.iter().len() == 0 {
-                    bail!("field `sources`: must contain at least one entry");
-                }
-                let mut map: HashMap<String, source::Source> = HashMap::new();
-                for (key, value) in dict.iter() {
-                    let key_str = key
-                        .unpack_str()
-                        .ok_or_else(|| anyhow::anyhow!("field `sources`: keys must be strings"))?;
-                    if !Self::is_valid_source_name(key_str) {
-                        bail!(
-                            "field `sources`: invalid source name `{key_str}` (allowed: letters, digits, `-`, `_`; must start with a letter or digit)"
-                        );
-                    }
-                    let source = value.downcast_ref::<Source>().ok_or_else(|| {
-                        anyhow::anyhow!("field `sources`: entry `{key_str}` is not a source value")
-                    })?;
-                    if map.insert(key_str.to_owned(), source.clone()).is_some() {
-                        bail!("field `sources`: duplicate key `{key_str}`");
-                    }
-                }
-                Sources::Multiple(map)
-            }
-        };
-
-        let host_deps = Self::optional_string_list(&module, "host_deps")?;
-        let build_deps = Self::optional_string_list(&module, "build_deps")?;
-        let deps = Self::optional_string_list(&module, "deps")?;
-        let run_deps = Self::optional_string_list(&module, "run_deps")?;
-
-        let recipe_key = kind.key(name);
-        let outputs = match kind {
-            RecipeKind::Package => {
-                let mut outputs = vec![OutputPackage {
-                    recipe: recipe_key.clone(),
-                    name: name.to_owned(),
-                    metadata: metadata.clone(),
-                    file_globs: Vec::new(),
-                    base: true,
-                }];
-                if let Some(value) = module.get("subpackages") {
-                    let list = ListRef::from_value(value)
-                        .ok_or_else(|| anyhow::anyhow!("field `subpackages`: expected a list"))?;
-                    for item in list.iter() {
-                        let sub = item.downcast_ref::<Subpackage>().ok_or_else(|| {
-                            anyhow::anyhow!(
-                                "field `subpackages`: each entry must be a subpackage value"
-                            )
-                        })?;
-                        Self::check_subpackage_file_globs(sub.name(), sub.file_globs())?;
-                        outputs.push(OutputPackage {
-                            recipe: recipe_key.clone(),
-                            name: sub.name().to_owned(),
-                            metadata: sub.metadata().inherit(&metadata),
-                            file_globs: sub.file_globs().to_vec(),
-                            base: false,
-                        });
-                    }
-                }
-                outputs
-            }
-            RecipeKind::HostPackage => {
-                if module.get("subpackages").is_some() {
-                    bail!("host recipes cannot declare `subpackages`");
-                }
-                Vec::new()
-            }
-        };
-
-        let module = module
-            .freeze()
-            .map_err(|err| anyhow::anyhow!("freezing recipe module {}: {err:?}", path.display()))?;
-        let phases = RecipePhases::load(&module)?;
-
-        let recipe = Recipe {
-            name: name.to_owned(),
-            path: path.to_path_buf(),
-            kind,
-            version,
-            revision,
-            sources,
-            outputs,
-            host_deps,
-            build_deps,
-            deps,
-            run_deps,
-            phases,
-        };
-        Ok(Some(recipe))
-    }
-
-    pub fn phases(&self) -> &RecipePhases {
-        &self.phases
-    }
-
-    pub fn key(&self) -> String {
-        self.kind.key(&self.name)
-    }
-
-    pub fn slug(&self) -> String {
-        self.kind.slug(&self.name)
-    }
-
-    pub fn data_dir(&self) -> Option<&Path> {
-        if self.path.file_name().is_some_and(|n| n == "recipe.star") {
-            self.path.parent()
-        } else {
-            None
-        }
-    }
-
-    pub fn files_dir(&self) -> Option<PathBuf> {
-        let candidate = self.data_dir()?.join("files");
-        if candidate.is_dir() {
-            Some(candidate)
-        } else {
-            None
-        }
-    }
-
-    pub fn path(&self) -> &Path {
-        &self.path
-    }
-
-    pub fn kind(&self) -> RecipeKind {
-        self.kind
-    }
-
-    pub fn version(&self) -> &str {
-        &self.version
-    }
-
-    pub fn revision(&self) -> i32 {
-        self.revision
-    }
-
-    pub fn sources(&self) -> &Sources {
-        &self.sources
-    }
-
-    pub fn outputs(&self) -> &[OutputPackage] {
-        &self.outputs
-    }
-
-    pub fn base_output(&self) -> Option<&OutputPackage> {
-        self.outputs.iter().find(|output| output.is_base())
-    }
-
-    pub fn host_deps(&self) -> &[String] {
-        &self.host_deps
-    }
-
-    pub fn build_deps(&self) -> &[String] {
-        &self.build_deps
-    }
-
-    pub fn deps(&self) -> &[String] {
-        &self.deps
-    }
-
-    pub fn run_deps(&self) -> &[String] {
-        &self.run_deps
-    }
-
-    fn optional_string_list(module: &Module, key: &str) -> anyhow::Result<Vec<String>> {
-        match eval::extract_string_list(module, key) {
-            Ok(v) => Ok(v),
-            Err(ExtractError::NotFound) => Ok(Vec::new()),
-            Err(e) => Err(anyhow::anyhow!("field `{key}`: {e}")),
-        }
-    }
-
-    /// Evaluates "build_if" functions.
-    fn eval_build_if(module: &Module) -> anyhow::Result<bool> {
-        let Some(value) = module.get("build_if") else {
-            return Ok(true);
-        };
-
-        if let Some(b) = value.unpack_bool() {
-            return Ok(b);
-        }
-
-        let callable: Option<StarlarkCallable<'_>> = StarlarkCallable::unpack_value_opt(value);
-        if callable.is_none() {
-            bail!("field `build_if`: expected a bool or a callable returning a bool");
-        }
-
-        let mut eval = Evaluator::new(module);
-        let result = eval
-            .eval_function(value, &[], &[])
-            .map_err(|err| anyhow::anyhow!("calling `build_if`: {err}"))?;
-        result
-            .unpack_bool()
-            .ok_or_else(|| anyhow::anyhow!("field `build_if`: must return a bool"))
-    }
-
-    fn is_valid_source_name(name: &str) -> bool {
-        let mut chars = name.chars();
-        let Some(first) = chars.next() else {
-            return false;
-        };
-        if !first.is_ascii_alphanumeric() {
-            return false;
-        }
-        chars.all(|c| c.is_ascii_alphanumeric() || c == '-' || c == '_')
-    }
-
-    fn check_subpackage_file_globs(name: &str, file_globs: &[String]) -> anyhow::Result<()> {
-        if file_globs.is_empty() {
-            bail!("subpackage '{name}' must declare at least one file glob");
-        }
-
-        for glob in file_globs {
-            if glob.is_empty() {
-                bail!("subpackage '{name}' has an empty file glob");
-            }
-            if glob.starts_with('/') {
-                bail!("subpackage '{name}' glob '{glob}' must be relative to the package dest dir");
-            }
-            if Path::new(glob)
-                .components()
-                .any(|component| matches!(component, std::path::Component::ParentDir))
-            {
-                bail!("subpackage '{name}' glob '{glob}' must not contain '..'");
-            }
-        }
-
-        Ok(())
-    }
-}
-pub struct RecipePhases {
-    prepare: Option<OwnedFrozenValue>,
-    configure: Option<OwnedFrozenValue>,
-    build: OwnedFrozenValue,
-    install: OwnedFrozenValue,
-}
-
-impl RecipePhases {
-    fn load(module: &FrozenModule) -> anyhow::Result<Self> {
-        Ok(Self {
-            prepare: optional_phase_function(module, "prepare")?,
-            configure: optional_phase_function(module, "configure")?,
-            build: required_phase_function(module, "build")?,
-            install: required_phase_function(module, "install")?,
-        })
-    }
-
-    pub fn prepare(&self) -> Option<&OwnedFrozenValue> {
-        self.prepare.as_ref()
-    }
-
-    pub fn configure(&self) -> Option<&OwnedFrozenValue> {
-        self.configure.as_ref()
-    }
-
-    pub fn build(&self) -> &OwnedFrozenValue {
-        &self.build
-    }
-
-    pub fn install(&self) -> &OwnedFrozenValue {
-        &self.install
-    }
-}
-
-fn optional_phase_function(
-    module: &FrozenModule,
-    name: &str,
-) -> anyhow::Result<Option<OwnedFrozenValue>> {
-    let Some(value) = module
-        .get_option(name)
-        .with_context(|| format!("field `{name}`"))?
-    else {
-        return Ok(None);
-    };
-
-    validate_phase_function(name, &value)?;
-    Ok(Some(value))
-}
-
-fn required_phase_function(module: &FrozenModule, name: &str) -> anyhow::Result<OwnedFrozenValue> {
-    let value = module
-        .get_option(name)
-        .with_context(|| format!("field `{name}`"))?
-        .ok_or_else(|| anyhow::anyhow!("field `{name}`: missing"))?;
-
-    validate_phase_function(name, &value)?;
-    Ok(value)
-}
-
-fn validate_phase_function(name: &str, value: &OwnedFrozenValue) -> anyhow::Result<()> {
-    let callable: Option<StarlarkCallable<'_>> = StarlarkCallable::unpack_value_opt(value.value());
-    if callable.is_none() {
-        bail!("field `{name}`: expected a callable value");
-    }
-    Ok(())
-}
-
-#[derive(Clone)]
-pub struct OutputPackage {
-    /// Canonical key of the owning recipe.
-    recipe: String,
-    /// Name of the output package.
-    name: String,
-    /// Metadata attached to the output package.
-    metadata: Metadata,
-    /// File globs claimed from the base package dest dir.
-    file_globs: Vec<String>,
-    /// Whether this is the recipe's base output.
-    base: bool,
-}
-
-impl OutputPackage {
-    pub fn key(&self) -> String {
-        self.name.clone()
-    }
-
-    pub fn recipe(&self) -> &str {
-        &self.recipe
-    }
-
-    pub fn name(&self) -> &str {
-        &self.name
-    }
-
-    pub fn metadata(&self) -> &Metadata {
-        &self.metadata
-    }
-
-    pub fn file_globs(&self) -> &[String] {
-        &self.file_globs
-    }
-
-    pub fn is_base(&self) -> bool {
-        self.base
-    }
-}
-
-pub struct RecipeSet {
-    recipes: HashMap<String, Recipe>,
-    outputs: HashMap<String, OutputPackage>,
-    skipped: HashSet<String>,
-}
-
-impl RecipeSet {
-    pub fn load(
-        root_path: &Path,
-        options: &Options,
-        lib: Option<&FrozenModule>,
-    ) -> anyhow::Result<Self> {
-        let mut recipes = HashMap::new();
-        let mut outputs = HashMap::new();
-        let mut skipped: HashSet<String> = HashSet::new();
-
-        for (path, kind) in [
-            ("recipes", RecipeKind::Package),
-            ("host-recipes", RecipeKind::HostPackage),
-        ] {
-            let recipes_dir = root_path.join(path);
-
-            if !recipes_dir.exists() {
-                continue;
-            }
-
-            for (name, path) in discover_recipes(&recipes_dir)? {
-                let key = kind.key(&name);
-                let loaded = Recipe::load(&path, &name, kind, options, lib)
-                    .with_context(|| format!("loading recipe `{name}`"))?;
-                let Some(recipe) = loaded else {
-                    skipped.insert(key);
-                    continue;
-                };
-
-                if recipes.insert(key.clone(), recipe).is_some() {
-                    bail!("duplicate recipe `{key}`");
-                }
-            }
-        }
-
-        for recipe in recipes.values() {
-            for output in &recipe.outputs {
-                let key = recipe.kind.key(&output.name);
-
-                if outputs.insert(key.clone(), output.clone()).is_some() {
-                    bail!("duplicate package output `{key}`");
-                }
-            }
-        }
-
-        Ok(Self {
-            recipes,
-            outputs,
-            skipped,
-        })
-    }
-
-    pub fn recipe(&self, key: &str) -> anyhow::Result<&Recipe> {
-        self.recipes
-            .get(key)
-            .ok_or_else(|| anyhow::anyhow!("unknown recipe `{key}`"))
-    }
-
-    pub fn output(&self, key: &str) -> anyhow::Result<&OutputPackage> {
-        self.outputs
-            .get(key)
-            .ok_or_else(|| anyhow::anyhow!("unknown output package `{key}`"))
-    }
-
-    pub fn is_skipped(&self, key: &str) -> bool {
-        self.skipped.contains(key)
-    }
-}
-
-fn discover_recipes(dir: &Path) -> anyhow::Result<HashMap<String, PathBuf>> {
-    let mut recipes: HashMap<String, PathBuf> = HashMap::new();
-
-    let walker = WalkDir::new(dir).follow_links(false);
-    for entry in walker {
-        let entry =
-            entry.with_context(|| format!("walking recipes directory {}", dir.display()))?;
-        if !entry.file_type().is_file() {
-            continue;
-        }
-
-        let path = entry.path();
-        let Some(file_name) = path.file_name().and_then(|n| n.to_str()) else {
-            continue;
-        };
-
-        let name = if file_name == "recipe.star" {
-            let Some(parent_name) = path
-                .parent()
-                .and_then(|p| p.file_name())
-                .and_then(|n| n.to_str())
-            else {
-                continue;
-            };
-            parent_name.to_owned()
-        } else if let Some(stem) = file_name.strip_suffix(".star") {
-            stem.to_owned()
-        } else {
-            continue;
-        };
-
-        if let Some(existing) = recipes.insert(name.clone(), path.to_path_buf()) {
-            bail!(
-                "recipe `{name}` is defined twice: {} and {}",
-                existing.display(),
-                recipes[&name].display(),
-            );
-        }
-    }
-
-    Ok(recipes)
-}
@@ -1,133 +0,0 @@
-use allocative::Allocative;
-use starlark::values::StarlarkValue;
-use starlark_derive::{NoSerialize, ProvidesStaticType, starlark_value};
-
-#[derive(Debug, Clone, Allocative, ProvidesStaticType, NoSerialize)]
-pub struct TarballSource {
-    url: String,
-    sha256: String,
-    strip_components: u32,
-    patches: Vec<String>,
-}
-
-impl std::fmt::Display for TarballSource {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "tarball_source")
-    }
-}
-
-starlark::starlark_simple_value!(TarballSource);
-
-#[starlark_value(type = "tarball_source")]
-impl<'v> StarlarkValue<'v> for TarballSource {}
-
-impl TarballSource {
-    pub fn new(url: String, sha256: String, strip_components: u32, patches: Vec<String>) -> Self {
-        Self {
-            url,
-            sha256,
-            strip_components,
-            patches,
-        }
-    }
-
-    pub fn url(&self) -> &str {
-        &self.url
-    }
-
-    pub fn sha256(&self) -> &str {
-        &self.sha256
-    }
-
-    pub fn strip_components(&self) -> u32 {
-        self.strip_components
-    }
-
-    pub fn patches(&self) -> &[String] {
-        &self.patches
-    }
-}
-
-#[derive(Debug, Clone, Allocative, ProvidesStaticType, NoSerialize)]
-pub struct GitSource {
-    url: String,
-    commit: String,
-    patches: Vec<String>,
-}
-
-impl std::fmt::Display for GitSource {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "git_source")
-    }
-}
-
-starlark::starlark_simple_value!(GitSource);
-
-#[starlark_value(type = "git_source")]
-impl<'v> StarlarkValue<'v> for GitSource {}
-
-impl GitSource {
-    pub fn new(url: String, commit: String, patches: Vec<String>) -> Self {
-        Self {
-            url,
-            commit,
-            patches,
-        }
-    }
-
-    pub fn url(&self) -> &str {
-        &self.url
-    }
-
-    pub fn commit(&self) -> &str {
-        &self.commit
-    }
-
-    pub fn patches(&self) -> &[String] {
-        &self.patches
-    }
-}
-
-#[derive(Debug, Clone, Allocative, ProvidesStaticType, NoSerialize)]
-pub enum Source {
-    Tarball(TarballSource),
-    Git(GitSource),
-}
-
-impl std::fmt::Display for Source {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "source")
-    }
-}
-
-starlark::starlark_simple_value!(Source);
-
-#[starlark_value(type = "source")]
-impl<'v> StarlarkValue<'v> for Source {}
-
-impl Source {
-    pub fn url(&self) -> &str {
-        match self {
-            Self::Tarball(source) => source.url(),
-            Self::Git(source) => source.url(),
-        }
-    }
-
-    pub fn cache_key(&self) -> &str {
-        match self {
-            Self::Tarball(source) => source.sha256(),
-            Self::Git(source) => source.commit(),
-        }
-    }
-
-    pub fn is_unknown_cache_key(&self) -> bool {
-        matches!(self.cache_key(), "?" | "???")
-    }
-
-    pub fn patches(&self) -> &[String] {
-        match self {
-            Self::Tarball(source) => source.patches(),
-            Self::Git(source) => source.patches(),
-        }
-    }
-}
@@ -1,45 +0,0 @@
-use allocative::Allocative;
-use starlark::values::StarlarkValue;
-use starlark_derive::{NoSerialize, ProvidesStaticType, starlark_value};
-
-use crate::recipe::Metadata;
-
-#[derive(Debug, Clone, Allocative, ProvidesStaticType, NoSerialize)]
-pub struct Subpackage {
-    name: String,
-    file_globs: Vec<String>,
-    metadata: Metadata,
-}
-
-impl Subpackage {
-    pub fn new(name: String, file_globs: Vec<String>, metadata: Metadata) -> Self {
-        Self {
-            name,
-            file_globs,
-            metadata,
-        }
-    }
-
-    pub fn name(&self) -> &str {
-        &self.name
-    }
-
-    pub fn file_globs(&self) -> &[String] {
-        &self.file_globs
-    }
-
-    pub fn metadata(&self) -> &Metadata {
-        &self.metadata
-    }
-}
-
-impl std::fmt::Display for Subpackage {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "subpackage")
-    }
-}
-
-starlark::starlark_simple_value!(Subpackage);
-
-#[starlark_value(type = "subpackage")]
-impl<'v> StarlarkValue<'v> for Subpackage {}
@@ -0,0 +1,91 @@
+from dataclasses import dataclass
+
+
+@dataclass(frozen=True)
+class Tarball:
+    url: str
+    sha256: str
+    strip_components: int = 1
+    patches: tuple[str, ...] = ()
+
+    @property
+    def cache_key(self) -> str:
+        return self.sha256
+
+
+@dataclass(frozen=True)
+class Git:
+    url: str
+    commit: str
+    patches: tuple[str, ...] = ()
+
+    @property
+    def cache_key(self) -> str:
+        return self.commit
+
+
+def tarball(
+    *,
+    url: str,
+    sha256: str,
+    strip_components: int = 1,
+    patches: list[str] | tuple[str, ...] = (),
+) -> Tarball:
+    return Tarball(
+        url=url,
+        sha256=sha256,
+        strip_components=strip_components,
+        patches=tuple(patches),
+    )
+
+
+def git(*, url: str, commit: str, patches: list[str] | tuple[str, ...] = ()) -> Git:
+    if not commit or commit == "?":
+        raise ValueError("git source requires an explicit commit SHA")
+    return Git(url=url, commit=commit, patches=tuple(patches))
+
+
+@dataclass(frozen=True)
+class Subpackage:
+    name: str
+    files: tuple[str, ...]
+    description: str = ""
+    license: str = ""
+    url: str = ""
+    maintainer: str = ""
+
+
+def subpackage(
+    name: str,
+    *,
+    description: str = "",
+    license: str = "",
+    url: str = "",
+    maintainer: str = "",
+    files: list[str] | tuple[str, ...] = (),
+) -> Subpackage:
+    for field_name, value in (
+        ("description", description),
+        ("license", license),
+        ("url", url),
+        ("maintainer", maintainer),
+    ):
+        if not isinstance(value, str):
+            raise TypeError(f"subpackage {name}: '{field_name}' must be a string")
+    for pat in files:
+        if pat.startswith("/") or ".." in pat.split("/"):
+            raise ValueError(
+                f"subpackage {name}: file pattern {pat!r} must be relative and free of '..'"
+            )
+    return Subpackage(
+        name=name,
+        description=description,
+        license=license,
+        url=url,
+        maintainer=maintainer,
+        files=tuple(files),
+    )
+
+
+def patches_of(src) -> tuple[str, ...]:
+    return src.patches
Author	SHA1	Message	Date
marv7000	b6e18c474e	*: Switch to python	2026-05-26 03:06:26 +02:00
marv7000	2e6704516a	recipe: Implement run	2026-05-23 00:10:08 +02:00
marv7000	1a7c817fb9	recipe: basic recipe parsing	2026-05-22 20:54:44 +02:00
iretq	a525868969	meta: initial rewrite (final)	2026-05-22 18:48:11 +02:00