From e02b14bdba1ea6086bef69029639c81d6e65737d Mon Sep 17 00:00:00 2001
From: Stefan Frijters <sfrijters@gmail.com>
Date: Sat, 24 Jan 2026 23:19:41 +0100
Subject: [PATCH] openttd-grfcodec: unstable-2021-03-10 -> 6.2.0, embed and
 check version information

---
 pkgs/by-name/op/openttd-grfcodec/package.nix | 24 ++++++++++++++++----
 1 file changed, 19 insertions(+), 5 deletions(-)

diff --git a/pkgs/by-name/op/openttd-grfcodec/package.nix b/pkgs/by-name/op/openttd-grfcodec/package.nix
index 292fa0de4a7f..a4f5a981fa8b 100644
--- a/pkgs/by-name/op/openttd-grfcodec/package.nix
+++ b/pkgs/by-name/op/openttd-grfcodec/package.nix
@@ -5,25 +5,39 @@
   boost,
   cmake,
   git,
+  versionCheckHook,
 }:
 
-stdenv.mkDerivation {
+stdenv.mkDerivation (finalAttrs: {
   pname = "openttd-grfcodec";
-  version = "unstable-2021-03-10";
+  version = "6.2.0";
 
   src = fetchFromGitHub {
     owner = "OpenTTD";
     repo = "grfcodec";
-    rev = "045774dee7cab1a618a3e0d9b39bff78a12b6efa";
-    sha256 = "0b4xnnkqc01d3r834lhkq744ymar6c8iyxk51wc4c7hvz0vp9vmy";
+    tag = finalAttrs.version;
+    hash = "sha256-zIRHo2glD738Rmg4dhetIGtbIY/AgMKnzAJaP00lsqk=";
+    leaveDotGit = true;
+    postFetch = ''
+      # git arguments taken from generate_version.cmake
+      git_date=$(git -C $out show -s --pretty=%cd --date=short)
+      echo "${finalAttrs.version};$git_date" > $out/.version
+      rm -rf $out/.git
+    '';
   };
 
   buildInputs = [ boost ];
+
   nativeBuildInputs = [
     cmake
     git
   ];
 
+  nativeInstallCheckInputs = [ versionCheckHook ];
+
+  doInstallCheck = true;
+  versionCheckProgram = "${placeholder "out"}/bin/grfcodec";
+
   installPhase = ''
     mkdir -p $out/bin
     cp -a grfcodec grfid grfstrip nforenum $out/bin/
@@ -35,4 +49,4 @@ stdenv.mkDerivation {
     license = lib.licenses.gpl2Plus;
     maintainers = with lib.maintainers; [ ToxicFrog ];
   };
-}
+})