From a149d692e9c438f41e2a4deb90595b21ede71b24 Mon Sep 17 00:00:00 2001
From: Stefan Frijters <sfrijters@gmail.com>
Date: Sat, 24 Jan 2026 23:28:11 +0100
Subject: [PATCH] openttd-nml: embed and check version

---
 pkgs/by-name/op/openttd-nml/package.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pkgs/by-name/op/openttd-nml/package.nix b/pkgs/by-name/op/openttd-nml/package.nix
index 4bdde7c4975a..257273eadc2b 100644
--- a/pkgs/by-name/op/openttd-nml/package.nix
+++ b/pkgs/by-name/op/openttd-nml/package.nix
@@ -2,6 +2,7 @@
   lib,
   fetchFromGitHub,
   python3,
+  versionCheckHook,
 }:
 
 python3.pkgs.buildPythonApplication (finalAttrs: {
@@ -16,10 +17,18 @@ python3.pkgs.buildPythonApplication (finalAttrs: {
     hash = "sha256-swAkUhduIhcfbAvKsPaJNBXcv8T6GDaxk3KKLLa9GQ8=";
   };
 
+  postPatch = ''
+    echo 'version = "${finalAttrs.version}"' > nml/__version__.py
+  '';
+
   propagatedBuildInputs = with python3.pkgs; [
     pillow
   ];
 
+  nativeInstallCheckInputs = [ versionCheckHook ];
+
+  doInstallCheck = true;
+
   meta = {
     homepage = "http://openttdcoop.org/";
     description = "Compiler for OpenTTD NML files";