anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "rehex";
  -  version = "0.3.92";
  +  version = "0.4.1";
   
     src = fetchFromGitHub {
       owner = "solemnwarning";
       repo = pname;
       rev = version;
  -    sha256 = "sha256-yZvJlomUpJwDJOBVSl49lU+JE1YMMs/BSzHepXoFlIY=";
  +    hash = "sha256-NuWWaYABQDaS9wkwmXkBJWHzLFJbUUCiePNQNo4yZrk=";
     };
   
     postPatch = ''
  -    substituteInPlace Makefile.osx --replace 'iconutil -c icns -o $@ $(ICONSET)' \
  -      'png2icns $@ $(ICONSET)/icon_16x16.png $(ICONSET)/icon_32x32.png $(ICONSET)/icon_128x128.png $(ICONSET)/icon_256x256.png $(ICONSET)/icon_512x512.png'
  +    # See https://github.com/solemnwarning/rehex/pull/148
  +    substituteInPlace Makefile.osx \
  +      --replace '$(filter-out %@2x.png,$(wildcard $(ICONSET)/*.png))' 'res/icon{16,32,128,256,512}.png'
     '';
   
  -  nativeBuildInputs = [ pkg-config ]
  +  nativeBuildInputs = [ pkg-config which ]
       ++ lib.optionals stdenv.isDarwin [ libicns ];
   
  -  buildInputs = [ capstone jansson lua5_3 ]
  +  buildInputs = [ capstone jansson libunistring lua5_3 ]
       ++ lib.optionals (!stdenv.isDarwin) [ wxGTK31 ]
       ++ lib.optionals stdenv.isDarwin [ Carbon Cocoa IOKit wxmac ];
   
  -  makeFlags = [ "prefix=$(out)" ]
  +  makeFlags = [ "prefix=${placeholder "out"}" ]
       ++ lib.optionals stdenv.isDarwin [ "-f Makefile.osx" ];
  +
  +  enableParallelBuilding = true;
   
     meta = with lib; {
       description = "Reverse Engineers' Hex Editor";
  
positive.code: , stdenv
  , fetchFromGitHub
  , pkg-config
  , capstone
  , jansson
  , lua5_3
  , wxGTK31
  , Carbon
  
negative.code:       engineering, and everything else.
      '';
      homepage = "https://github.com/solemnwarning/rehex";
      changelog = "https://github.com/solemnwarning/rehex/raw/${version}/CHANGES.txt";
      license = licenses.gpl2Only;
      maintainers = with maintainers; [ markus1189 SuperSandro2000 ];
      platforms = platforms.all;
    };
  