renpy: automatically update version codename

Signed-off-by: Marcin Serwin <marcin@serwin.dev>

pkgs/by-name/re/renpy/package.nix

@@ -11,7 +11,6 @@
   libGLU,
   libpng,
   makeWrapper,
-  nix-update-script,
   pkg-config,
   python3,
   SDL2,
@@ -99,7 +98,7 @@ stdenv.mkDerivation (finalAttrs: {
     official = False
     nightly = False
     # Look at https://renpy.org/latest.html for what to put.
-    version_name = 'Tomorrowland'
+    version_name = "Tomorrowland"
     EOF
   '';
 
@@ -131,7 +130,7 @@ stdenv.mkDerivation (finalAttrs: {
   doInstallCheck = true;
   versionCheckProgramArg = "--version";
 
-  passthru.updateScript = nix-update-script { };
+  passthru.updateScript = ./update.sh;
 
   meta = {
     description = "Visual Novel Engine";

pkgs/by-name/re/renpy/update.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p bash nix-update html-xml-utils
+
+set -ex
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd)"
+
+codename=`curl -L https://renpy.org/latest.html | hxclean | hxselect -c h1 small`
+sed -E -i "s/(version_name = ).*/\1$codename/" $SCRIPT_DIR/package.nix
+
+nix-update renpy