anchor.diff:  { stdenv
   , fetchFromGitLab
  -, fetchpatch
   , meson
   , ninja
   , pkg-config
  
positive.code:     homepage = "https://gitlab.freedesktop.org/slirp/libslirp";
      license = licenses.bsd3;
      maintainers = with maintainers; [ orivej ];
      platforms = platforms.linux;
    };
  }
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "libslirp";
    version = "4.4.0";
  
    src = fetchFromGitLab {
      domain = "gitlab.freedesktop.org";
      owner = "slirp";
      repo = pname;
      rev = "v${version}";
      sha256 = "0abh337jvij664w65zszjql42n720zzfap0ab0amr4qcvkzw7bjx";
    };
  
    nativeBuildInputs = [ meson ninja pkg-config ];
  
  