alsa-lib: provide update script & remove with lib; (#428067)

pkgs/by-name/al/alsa-lib/package.nix

@@ -5,6 +5,7 @@
   alsa-topology-conf,
   alsa-ucm-conf,
   testers,
+  directoryListingUpdater,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -36,9 +37,14 @@ stdenv.mkDerivation (finalAttrs: {
     "dev"
   ];
 
-  passthru.tests.pkg-config = testers.testMetaPkgConfig finalAttrs.finalPackage;
+  passthru = {
+    tests.pkg-config = testers.testMetaPkgConfig finalAttrs.finalPackage;
+    updateScript = directoryListingUpdater {
+      url = "https://www.alsa-project.org/files/pub/lib/";
+    };
+  };
 
-  meta = with lib; {
+  meta = {
     homepage = "http://www.alsa-project.org/";
     description = "ALSA, the Advanced Linux Sound Architecture libraries";
     mainProgram = "aserver";
@@ -48,12 +54,12 @@ stdenv.mkDerivation (finalAttrs: {
       MIDI functionality to the Linux-based operating system.
     '';
 
-    license = licenses.lgpl21Plus;
+    license = lib.licenses.lgpl21Plus;
     pkgConfigModules = [
       "alsa"
       "alsa-topology"
     ];
-    platforms = platforms.linux ++ platforms.freebsd;
-    maintainers = with maintainers; [ l-as ];
+    platforms = with lib.platforms; linux ++ freebsd;
+    maintainers = with lib.maintainers; [ l-as ];
   };
 })