openttd-grfcodec unstable-2021-03-10 -> 6.1.0 https://github.com/OpenTTD/grfcodec/releases
attrpath: openttd-grfcodec
Checking auto update branch...
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[version] 
[version] updated version and sha256
[rustCrateVersion] 
[rustCrateVersion] No cargoSha256 or cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorSha256 or vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] skipping because derivation has no updateScript
Diff after rewrites:
diff --git a/pkgs/games/openttd/grfcodec.nix b/pkgs/games/openttd/grfcodec.nix
index af4e31537463..21f0f683db30 100644
--- a/pkgs/games/openttd/grfcodec.nix
+++ b/pkgs/games/openttd/grfcodec.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   pname = "openttd-grfcodec";
-  version = "unstable-2021-03-10";
+  version = "6.1.0";
 
   src = fetchFromGitHub {
     owner = "OpenTTD";
     repo = "grfcodec";
     rev = "045774dee7cab1a618a3e0d9b39bff78a12b6efa";
-    sha256 = "0b4xnnkqc01d3r834lhkq744ymar6c8iyxk51wc4c7hvz0vp9vmy";
+    sha256 = "sha256-vu50N/gbHkYYD2V2HxEzWVVPyMETUjJQHi0Ahqe1nSw=";
   };
 
   buildInputs = [boost];

Source url did not change.