anchor.diff:  #  aubio = callPackage ../development/libraries/aubio { };
   #
     audiofile = callPackage ../development/libraries/audiofile { };
  -#
  -#  babl = callPackage ../development/libraries/babl { };
  +
  +  babl = callPackage ../development/libraries/babl { };
   #
   #  beecrypt = callPackage ../development/libraries/beecrypt { };
   #
  
positive.code: #
  #  hashcat = callPackage ../tools/security/hashcat { };
  #
  #  hal-flash = callPackage ../os-specific/linux/hal-flash { };
  #
  #  halibut = callPackage ../tools/typesetting/halibut { };
  #
  
negative.code: #
  #  ccrtp_1_8 = callPackage ../development/libraries/ccrtp/1.8.nix { };
  #
    celt = callPackage ../development/libraries/celt {};
    celt_0_7 = callPackage ../development/libraries/celt/0.7.nix {};
    celt_0_5_1 = callPackage ../development/libraries/celt/0.5.1.nix {};
  #
  #  cgal = callPackage ../development/libraries/CGAL {};
  #
  