Filter stale APKs from CI package cache

scripts/apk/package-lib.sh

@@ -37,6 +37,14 @@ apk_package_dirs() {
     return
   fi
 
+  apk_all_package_dirs "${repo_root}"
+}
+
+apk_all_package_dirs() {
+  local repo_root="$1"
+  local package_root
+
+  package_root="$(apk_package_root "${repo_root}")"
   find "${package_root}" -mindepth 2 -maxdepth 2 -name APKBUILD -print \
     | sed 's#/APKBUILD$##' \
     | sort
@@ -87,6 +95,30 @@ apk_package_supports_arch() {
   return 1
 }
 
+apk_package_apk_names() {
+  local package_dir="$1"
+  local arch="$2"
+
+  (
+    set +u
+    local pkgname
+    local pkgver
+    local pkgrel
+    local subpackage
+    local subpackages
+    export CARCH="${arch}"
+    cd "${package_dir}"
+    # shellcheck source=/dev/null
+    . ./APKBUILD
+
+    printf '%s-%s-r%s.apk\n' "${pkgname}" "${pkgver}" "${pkgrel}"
+    for subpackage in ${subpackages:-}; do
+      subpackage="${subpackage%%:*}"
+      printf '%s-%s-r%s.apk\n' "${subpackage}" "${pkgver}" "${pkgrel}"
+    done
+  )
+}
+
 apk_container_package_dir() {
   local repo_root="$1"
   local package_dir="$2"