creek: add update script

pkgs/by-name/cr/creek/package.nix

@@ -47,6 +47,8 @@ stdenv.mkDerivation (finalAttrs: {
     "${finalAttrs.deps}"
   ];
 
+  passthru.updateScript = ./update.sh;
+
   meta = {
     homepage = "https://git.8pit.net/creek";
     description = "Malleable and minimalist status bar for the River compositor";

pkgs/by-name/cr/creek/update.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p bash common-updater-scripts gnused nixfmt-rfc-style
+
+latest_tag=$(list-git-tags --url=https://github.com/nmeum/creek | sed 's/^v//' | tail -n 1)
+
+update-source-version creek "$latest_tag"
+
+wget "https://raw.githubusercontent.com/nmeum/creek/v${latest_tag}/build.zig.zon"
+nix --extra-experimental-features 'nix-command flakes' run github:nix-community/zon2nix# -- build.zig.zon >pkgs/by-name/cr/creek/build.zig.zon.nix
+
+nixfmt pkgs/by-name/cr/creek/build.zig.zon.nix
+
+rm -rf build.zig.zon