anchor.diff: -{ stdenv, fetchurl, alsaLib, autoconf, automake, dssi, gtk, ladspaH,
  -ladspaPlugins, liblo, pkgconfig }:
  +{ stdenv, fetchurl, alsaLib, autoconf, automake, dssi, gtk, jackaudio,
  +ladspaH, ladspaPlugins, liblo, pkgconfig }:
   
   stdenv.mkDerivation  rec {
     name = "xsynth-dssi-${version}";
  
positive.code:     sha256 = "00nwv2pqjbmxqdc6xdm0cljq6z05lv4y6bibmhz1kih9lm0lklnk";
    };
  
    buildInputs = [ alsaLib autoconf automake dssi gtk ladspaH
      ladspaPlugins liblo pkgconfig ];
  
    installPhase = ''
  
negative.code:       synths) with user interfaces, permitting them to be hosted
        in-process by audio applications.
      '';
      homepage = "http://dssi.sourceforge.net/download.html#Xsynth-DSSI";
      license = licenses.gpl2Plus;
      platforms = platforms.linux;
      maintainers = [ maintainers.goibhniu ];
    };
  