anchor.diff:  
       meta = with stdenv.lib; {
         description = "A computer-aided design (CAD) tool from a parallel universe";
  -      homepage    = "https://github.com/mkeeter/antimony";
  +      homepage    = https://github.com/mkeeter/antimony;
         license     = licenses.mit;
         maintainers = with maintainers; [ rnhmjoj ];
         platforms   = platforms.linux;
  
positive.code: 
      buildInputs = [
        libpng python3 python3.pkgs.boost
        libGLU_combined qtbase ncurses
      ];
  
      nativeBuildInputs = [ cmake flex lemon ];
  
negative.code: { stdenv, fetchFromGitHub, libpng, python3
  , libGLU_combined, qtbase, wrapQtAppsHook, ncurses
  , cmake, flex, lemon
  }:
  
  let
    gitRev    = "6dfe6822e0279a4cc2f1c60e85b42212627285fe";
    gitBranch = "develop";
    gitTag    = "0.9.3";
  in
    stdenv.mkDerivation {
      pname = "antimony";
      version = "2019-10-30";
  
      src = fetchFromGitHub {
        owner  = "mkeeter";
        repo   = "antimony";
        rev    = gitRev;
        sha256 = "07zlkwlk79czq8dy85b6n3ds3g36l8qy4ix849ady6ia3gm8981j";
      };
  
      patches = [ ./paths-fix.patch ];
  