anchor.diff: -{ stdenv, mkDerivation, fetchFromGitHub, fetchpatch, makeDesktopItem, makeWrapper
  +{ stdenv, mkDerivation, fetchFromGitHub, makeDesktopItem, makeWrapper
   , python, pkgconfig, SDL2, SDL2_ttf, alsaLib, which, qtbase, libXinerama
   , libpcap, CoreAudioKit, ForceFeedback
   , installShellFiles }:
  
positive.code: 
  let
    majorVersion = "0";
    minorVersion = "224";
  
    desktopItem = makeDesktopItem {
      name = "MAME";
  
negative.code:     owner = "mamedev";
      repo = "mame";
      rev = "mame${majorVersion}${minorVersion}";
      sha256 = "0ln5z8xp81j2af2s94dixnk9n68qpi6b3plynp3pharg6dd55yac";
    };
  
    hardeningDisable = [ "fortify" ];
  