3 files changed, 60 insertions, 0 deletions

diff --git a/src/plan.rs b/src/plan.rs
index 3d28d96..f3e58fa 100644
--- a/src/plan.rs
+++ b/src/plan.rs
@@ -1,5 +1,8 @@
+use std::path::Path;
+
 use anyhow::Result;
 
+use crate::package_installer::{AptConfig, PackageRequest};
 use crate::{ImageSpec, Stage};
 
 #[derive(Debug, Clone, PartialEq, Eq)]
@@ -24,4 +27,23 @@ impl BuildPlan {
     pub fn dependencies(&self, stage: Stage) -> &'static [Stage] {
         stage.dependencies()
     }
+
+    /// Compile package-installation inputs from the validated immutable spec.
+    /// This keeps ALT's external resolver behind the typed adapter boundary.
+    pub fn package_request(
+        &self,
+        workdir: impl AsRef<Path>,
+        apt_config: impl AsRef<Path>,
+    ) -> Result<PackageRequest> {
+        PackageRequest::new(
+            workdir,
+            AptConfig::new(apt_config)?,
+            self.spec.packages.base.iter().cloned(),
+            self.spec
+                .packages
+                .selectors
+                .iter()
+                .map(|selector| selector.as_str().to_owned()),
+        )
+    }
 }
diff --git a/tests/compare.rs b/tests/compare.rs
index 6dd7317..eb6d388 100644
--- a/tests/compare.rs
+++ b/tests/compare.rs
@@ -217,6 +217,26 @@ fn normalizes_legacy_dot_prefixed_archive_paths_before_comparison() {
 }
 
 #[test]
+fn normalizes_dot_prefixed_paths_from_a_legacy_tree_archive() {
+    let fixture = tempdir().expect("temporary directory");
+    let rootfs = fixture.path().join("rootfs");
+    fs::create_dir_all(rootfs.join("etc")).expect("create rootfs directory");
+    fs::write(rootfs.join("etc/controller.conf"), "controller\n").expect("write rootfs file");
+    let artifact = fixture.path().join("legacy.tar");
+    let mut archive = tar::Builder::new(fs::File::create(&artifact).expect("create legacy archive"));
+    archive.append_dir_all(".", &rootfs).expect("write legacy tree archive");
+    archive.finish().expect("finish legacy archive");
+
+    let manifest = ArtifactManifest::collect_archive(&artifact).expect("collect legacy archive facts");
+
+    assert!(manifest.files.iter().all(|record| !record.path.starts_with("./")));
+    assert!(manifest
+        .archive_members
+        .iter()
+        .all(|record| !record.path.starts_with("./")));
+}
+
+#[test]
 fn excludes_legacy_internal_host_and_fakedata_archive_members() {
     let fixture = tempdir().expect("temporary directory");
     let rootfs = fixture.path().join("rootfs");
diff --git a/tests/package_installer.rs b/tests/package_installer.rs
index 622d378..b322aa9 100644
--- a/tests/package_installer.rs
+++ b/tests/package_installer.rs
@@ -1,6 +1,7 @@
 use std::path::PathBuf;
 
 use alt_controller_image::hasher::{CommandRunner, HasherInstaller, Invocation};
+use alt_controller_image::{BuildPlan, ImageSpec};
 use alt_controller_image::package_installer::{AptConfig, PackageInstaller, PackageRequest};
 
 #[derive(Default)]
@@ -70,3 +71,20 @@ fn package_request_rejects_empty_packages_and_unsafe_apt_config_paths() {
     )
     .is_err());
 }
+
+#[test]
+fn build_plan_compiles_its_typed_package_request() {
+    let spec = ImageSpec::load(std::path::Path::new("profiles/alt-controller.toml"))
+        .expect("load controller spec");
+    let plan = BuildPlan::compile(spec).expect("compile controller plan");
+
+    let request = plan
+        .package_request("work/alt-controller", "profiles/apt.conf")
+        .expect("compile package request");
+
+    assert_eq!(request.workdir(), std::path::Path::new("work/alt-controller"));
+    assert_eq!(request.apt_config().as_path(), std::path::Path::new("profiles/apt.conf"));
+    assert_eq!(request.packages()[0], "apt");
+    assert!(request.packages().contains(&"libiec61850".to_owned()));
+    assert_eq!(request.selectors(), ["^kernel-(image|modules-())-(rt)$"]);
+}