anchor.diff:      libdrm
       mesa
       libxkbcommon
  +    libxshmfence
       xorg.libxkbfile
       xorg.libX11
       xorg.libXcomposite
  
positive.code:           "https://mirror.cs.uchicago.edu/skype/pool/main/s/skypeforlinux/skypeforlinux_${version}_amd64.deb"
            "https://web.archive.org/web/https://repo.skype.com/deb/pool/main/s/skypeforlinux/skypeforlinux_${version}_amd64.deb"
          ];
          sha256 = "PaqlPp+BRS0cH7XI4x1/5HqYti63rQThmTtPaghIQH0=";
        }
      else
        throw "Skype for linux is not supported on ${stdenv.hostPlatform.system}";
  
negative.code:     description = "Linux client for skype";
      homepage = "https://www.skype.com";
      license = licenses.unfree;
      maintainers = with maintainers; [ panaeon jraygauthier ];
      platforms = [ "x86_64-linux" ];
    };
  }
  