anchor.diff:  #
   #  libvirt-glib = callPackage ../development/libraries/libvirt-glib { };
   #
  -#  libvisio = callPackage ../development/libraries/libvisio { };
  -#
  +  libvisio = callPackage ../development/libraries/libvisio { };
  +
     libvisual = callPackage ../development/libraries/libvisual { };
   #
   #  libvncserver = callPackage ../development/libraries/libvncserver {};
  
positive.code: #  libpar2 = callPackage ../development/libraries/libpar2 { };
  #
    libpcap = callPackage ../development/libraries/libpcap { };
  #
  #  libpipeline = callPackage ../development/libraries/libpipeline { };
  #
  #  libpgf = callPackage ../development/libraries/libpgf { };
  #
  
negative.code: #  jansson = callPackage ../development/libraries/jansson { };
  #
    jbig2dec = callPackage ../development/libraries/jbig2dec { };
  
    jbigkit = callPackage ../development/libraries/jbigkit { };
  
    jemalloc = callPackage ../development/libraries/jemalloc { };
  #
  #  jetty_gwt = callPackage ../development/libraries/java/jetty-gwt { };
  