anchor.diff:      platforms = platforms.unix;
     };
   }
  -
  
positive.code: { stdenv, fetchFromGitHub, cmake, pkgconfig, openssl, zlib, libX11, libXcursor
  , libXdamage, libXext, glib, alsaLib, ffmpeg, libxkbfile, libXinerama, libXv
  , substituteAll
  , libpulseaudio ? null, cups ? null, pcsclite ? null
  , buildServer ? true, optimize ? true
  
negative.code:       });
  
    buildInputs = [
      cmake pkgconfig openssl zlib libX11 libXcursor libXdamage libXext libXrender glib
      alsaLib ffmpeg libxkbfile libXinerama libXv cups libpulseaudio pcsclite
    ];
  
  