anchor.diff:    '';
   
     meta = with lib; {
  +    homepage = "https://zdoom.org/wiki/ZDBSP";
       description = "ZDoom's internal node builder for DOOM maps";
  -    homepage = "https://zdoom.org/wiki/ZDBSP";
       license = licenses.gpl2Plus;
       maintainers = with maintainers; [ lassulus siraben ];
       platforms = platforms.unix;
  
positive.code: { lib, stdenv, fetchzip, cmake, zlib }:
  
  stdenv.mkDerivation rec {
    pname = "zdbsp";
  
negative.code: 
    src = fetchzip {
      url = "https://zdoom.org/files/utils/zdbsp/zdbsp-${version}-src.zip";
      sha256 = "sha256-DTj0jMNurvwRwMbo0L4+IeNlbfIwUbqcG1LKd68C08g=";
      stripRoot = false;
    };
  
  