Paketierungs-Postinstall-Skripte für /var/lib/mac2ip ergänzen

deb/rpm/arch legen beim Paket-Install /var/lib/mac2ip mit 0777 an, da der
globale Cache für alle Nutzer beschreibbar sein muss, /var/lib selbst aber
nur root beschreiben kann. package-arch.py unterstützt dafür neu ein
optionales, metadatengetriebenes Install-Skriptlet
([package.metadata.arch].install_script), das pacman-konform als
<name>.install eingebettet wird.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0118Wbg95ADSDynYfci2qUjK

packaging/arch/mac2ip.install

@@ -0,0 +1,8 @@
+post_install() {
+  mkdir -p /var/lib/mac2ip
+  chmod 0777 /var/lib/mac2ip
+}
+
+post_upgrade() {
+  post_install
+}

packaging/deb/postinst

@@ -0,0 +1,7 @@
+#!/bin/sh
+set -e
+
+mkdir -p /var/lib/mac2ip
+chmod 0777 /var/lib/mac2ip
+
+exit 0

scripts/package-arch.py

@@ -87,6 +87,7 @@ def build_package(target_triple=None, target_arch=None, pkgrel=None):
 
     depends = arch_meta.get("depends", ["gcc-libs", "glibc"])
     optdepends = arch_meta.get("optdepends", [])
+    install_rel_path = arch_meta.get("install_script")
 
     with tempfile.TemporaryDirectory() as build_dir:
         bin_dir = os.path.join(build_dir, "usr/bin")
@@ -102,6 +103,14 @@ def build_package(target_triple=None, target_arch=None, pkgrel=None):
         if os.path.exists("README.md"):
             subprocess.run(["install", "-m", "644", "README.md", f"{doc_dir}/README.md"], check=True)
 
+        install_scriptlet_name = None
+        if install_rel_path and os.path.exists(install_rel_path):
+            install_scriptlet_name = f"{name}.install"
+            subprocess.run(
+                ["install", "-m", "644", install_rel_path, os.path.join(build_dir, install_scriptlet_name)],
+                check=True,
+            )
+
         installed_size = subprocess.check_output(["du", "-sb", build_dir]).decode().split()[0]
         builddate = str(int(time.time()))
 
@@ -117,6 +126,8 @@ def build_package(target_triple=None, target_arch=None, pkgrel=None):
             f"arch = {arch}",
             f"license = {license_name}",
         ]
+        if install_scriptlet_name:
+            pkginfo_lines.append(f"install = {install_scriptlet_name}")
         for dep in depends:
             pkginfo_lines.append(f"depend = {dep}")
         for optdep in optdepends:
@@ -128,7 +139,11 @@ def build_package(target_triple=None, target_arch=None, pkgrel=None):
 
         os.makedirs("target/arch", exist_ok=True)
         output_file = os.path.abspath(f"target/arch/{name}-{version}-{pkgrel}-{arch}.pkg.tar.zst")
-        subprocess.run(["tar", "--zstd", "-cf", output_file, ".PKGINFO", "usr"], cwd=build_dir, check=True)
+        tar_members = [".PKGINFO"]
+        if install_scriptlet_name:
+            tar_members.append(install_scriptlet_name)
+        tar_members.append("usr")
+        subprocess.run(["tar", "--zstd", "-cf", output_file, *tar_members], cwd=build_dir, check=True)
         print(f"Arch-Paket erfolgreich erstellt: {output_file}")