Filter stale APKs from CI package cache

scripts/apk/list-packages.sh

@@ -2,7 +2,25 @@
 set -euo pipefail
 
 repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+# shellcheck source=scripts/apk/package-lib.sh
+. "${repo_root}/scripts/apk/package-lib.sh"
+
 repo_dir="${repo_root}/packages/local"
+arches="${ALPINE_ARCHES:-x86_64 aarch64}"
+declare -A expected_apks=()
+
+while IFS= read -r package_source_dir; do
+  apk_validate_package_dir "${package_source_dir}"
+  for arch in ${arches}; do
+    if ! apk_package_supports_arch "${package_source_dir}" "${arch}"; then
+      continue
+    fi
+
+    while IFS= read -r apk_name; do
+      expected_apks["${repo_dir}/${arch}/${apk_name}"]=1
+    done < <(apk_package_apk_names "${package_source_dir}" "${arch}")
+  done
+done < <(apk_all_package_dirs "${repo_root}")
 
 if [[ -n "${ALPINE_ARCH:-}" ]]; then
   package_dirs=("${repo_dir}/${ALPINE_ARCH}")
@@ -29,6 +47,10 @@ for package_dir in "${package_dirs[@]}"; do
 
   printf '## %s\n' "$(basename "${package_dir}")"
   for apk in "${apks[@]}"; do
+    if [[ -z "${expected_apks[${apk}]:-}" ]]; then
+      printf 'Skipping stale local APK: %s\n' "${apk#"${repo_root}/"}"
+      continue
+    fi
     printf '### %s\n' "$(basename "${apk}")"
     tar -xOf "${apk}" .PKGINFO 2>/dev/null \
       | sed -n '/^pkgname =/p;/^pkgver =/p;/^arch =/p;/^depend =/p;/^provides =/p;/^install_if =/p'