shadershark: simplify update script (#342342)

pkgs/by-name/sh/shadershark/package.nix

@@ -9,6 +9,8 @@
 , imagemagick
 , makeWrapper
 , installShellFiles
+, genericUpdater
+, writeShellScript
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -50,7 +52,13 @@ stdenv.mkDerivation (finalAttrs: {
     runHook postInstall
   '';
 
-  passthru.updateScript = [ ./update.sh finalAttrs.src.url ];
+  passthru.updateScript = genericUpdater {
+    inherit (finalAttrs) pname version;
+    versionLister = writeShellScript "shadershark-tags" ''
+      repo_url=${finalAttrs.src.url}
+      curl "$repo_url/tags" | grep '/rev/v' | sed 's;.*/rev/v\([^"]*\)[^$]*;\1; #'
+    '';
+  };
 
   meta = with lib; {
     mainProgram = "shader-shark";

pkgs/by-name/sh/shadershark/update.sh

@@ -1,14 +0,0 @@
-#!/usr/bin/env nix-shell
-#! nix-shell -i bash -p curl common-updater-scripts
-
-set -e
-
-repo_url="$1"; shift
-
-data="$(curl "$repo_url/tags")"
-
-rev="$(echo "$data" | grep '/rev/v' | sed 's;.*/rev/v\([^"]*\)[^$]*;\1;' | head -n 1)"
-echo "new rev: $rev"
-
-update-source-version shadershark "$rev" \
-  --print-changes