diff --git a/recipes/limine.py b/recipes/limine.py
index 1bb10a9..304504c 100644
--- a/recipes/limine.py
+++ b/recipes/limine.py
@@ -12,7 +12,7 @@ deps = [profile["libc"]]
 
 build_if = profile["arch"] in ("x86_64", "aarch64", "riscv64", "loongarch64")
 
-_arch_args = {
+arch_args = {
     "x86_64": [
         "--enable-uefi-x86-64",
         "--enable-uefi-ia32",
@@ -25,7 +25,7 @@ _arch_args = {
 }
 
 configure, build, install = autotools(
-    configure_args=["--enable-uefi-cd", *_arch_args.get(profile["arch"], [])],
+    configure_args=["--enable-uefi-cd", *arch_args[profile["arch"]]],
     configure_env={"TOOLCHAIN_FOR_TARGET": profile["triple"] + "-"},
 )
 
diff --git a/src/apk.py b/src/apk.py
index 7c23c76..bec3bb0 100644
--- a/src/apk.py
+++ b/src/apk.py
@@ -40,7 +40,6 @@ def _info_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",
@@ -58,7 +57,7 @@ def mkpkg_base(container: Container, recipe: Recipe, arch: str) -> None:
             recipe.license,
             recipe.url,
             recipe.maintainer,
-            deps,
+            list(recipe.deps),
         ),
     ]
     container.exec(args)
diff --git a/src/builder.py b/src/builder.py
index c879343..9dd685f 100644
--- a/src/builder.py
+++ b/src/builder.py
@@ -204,7 +204,7 @@ def _finalize_host(c: Container, layout: Layout, r: Recipe) -> None:
 
 
 def _sysroot_sync(c: Container, r: Recipe) -> None:
-    direct_deps = list(r.deps)
+    direct_deps = list(dict.fromkeys((*r.deps, *r.build_deps)))
     if not direct_deps:
         return
     initdb = not apk.sysroot_initialized(c)
diff --git a/src/plan.py b/src/plan.py
index 946a4c3..520912b 100644
--- a/src/plan.py
+++ b/src/plan.py
@@ -111,6 +111,21 @@ def build_plan(
     seen: dict[str, Recipe] = {}
     ts: graphlib.TopologicalSorter[str] = graphlib.TopologicalSorter()
     forced: set[str] = set()
+    target_outputs: dict[str, Recipe] = {}
+
+    for tr in rs.target.values():
+        for out in tr.outputs:
+            if out in target_outputs:
+                raise ValueError(f"duplicate target output: {out}")
+            target_outputs[out] = tr
+
+    def target_dep(owner: str, name: str) -> Recipe:
+        tr = target_outputs.get(name)
+        if tr is None:
+            raise KeyError(f"{owner}: unknown target dep {name!r}")
+        if not tr.enabled:
+            raise ValueError(f"{owner}: dep {name!r} disabled by build_if")
+        return tr
 
     def add(r: Recipe) -> None:
         k = _key(r)
@@ -127,22 +142,14 @@ def build_plan(
             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")
+            for d in (*r.deps, *r.build_deps):
+                tr = target_dep(r.name, d)
                 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")
+            # host recipes may declare target deps that need to land in /sysroot
+            for d in (*r.deps, *r.build_deps):
+                tr = target_dep(f"host:{r.name}", d)
                 add(tr)
                 deps.append(_key(tr))
         ts.add(k, *deps)
diff --git a/src/recipe.py b/src/recipe.py
index b9aed88..f781721 100644
--- a/src/recipe.py
+++ b/src/recipe.py
@@ -28,8 +28,8 @@ class Recipe:
     maintainer: str
     sources: dict[str | None, Tarball | src_mod.Git]  # key=None for single source
     host_deps: tuple[str, ...]
+    build_deps: tuple[str, ...]
     deps: tuple[str, ...]
-    run_deps: tuple[str, ...]
     subpackages: tuple[Subpackage, ...]
     phases: dict[str, Callable[[Any], None]]
     enabled: bool
@@ -163,8 +163,8 @@ def _load_one(
                 )
 
     host_deps = tuple(getattr(mod, "host_deps", ()) or ())
+    build_deps = tuple(getattr(mod, "build_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):
@@ -200,8 +200,8 @@ def _load_one(
         maintainer=maintainer,
         sources=sources,
         host_deps=host_deps,
+        build_deps=build_deps,
         deps=deps,
-        run_deps=run_deps,
         subpackages=subs,
         phases=phases,
         enabled=enabled,