graphite: update branding in updateScript (#515920)

pkgs/by-name/gr/graphite/package.nix

@@ -27,7 +27,6 @@
   libxcursor,
   libx11,
   libxcb,
-  nix-update-script,
 }:
 
 let
@@ -173,12 +172,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   disallowedReferences = [ rustc ];
 
-  passthru.updateScript = nix-update-script {
-    extraArgs = [
-      "--version=branch"
-      "--version-regex=(0-unstable-.*)"
-    ];
-  };
+  passthru.updateScript = ./update.nu;
 
   meta = {
     description = "Open source vector graphics editor and procedural design engine";

pkgs/by-name/gr/graphite/update.nu

@@ -0,0 +1,14 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i nu -p nushell nix-update curl common-updater-scripts nix
+
+^nix-update graphite --version=branch --version-regex '(0-unstable-.*)'
+
+let pkg = "./pkgs/by-name/gr/graphite/package.nix"
+let rev = (open $pkg | lines | where ($it | str contains 'rev = "') | first | str trim | parse 'rev = "{rev}";' | get 0.rev)
+let meta = (http get $"https://raw.githubusercontent.com/GraphiteEditor/Graphite/($rev)/.branding" | lines)
+let branding_rev = ($meta | get 0 | path basename | str replace ".tar.gz" "")
+let branding_hash = (^nix hash convert --to sri --hash-algo sha256 ($meta | get 1) | str trim)
+open $pkg
+| str replace --regex 'brandingRev = "[^"]*"' $'brandingRev = "($branding_rev)"'
+| str replace --regex 'brandingHash = "[^"]*"' $'brandingHash = "($branding_hash)"'
+| save --force $pkg