anchor.diff:  }:
   
   let
  -  version = "0.9.10";
  +  version = "0.9.11";
   
   in
   stdenv.mkDerivation {
  
positive.code: 
    meta = with stdenv.lib; {
      description = "A sandbox-style space exploration game similar to Elite, Escape Velocity, or Star Control";
      homepage = https://endless-sky.github.io/;
      license = with licenses; [
        gpl3Plus cc-by-sa-30 cc-by-sa-40 publicDomain
      ];
  
negative.code:     owner = "endless-sky";
      repo = "endless-sky";
      rev = "v${version}";
      sha256 = "0f4svg448bg8qx49f8fr8l4yzks7an6673jwgva15p3zzfxy6w03";
    };
  
    enableParallelBuilding = true;
  