anchor.diff:      callPackage ../development/libraries/fontconfig/make-fonts-cache.nix {
         inherit fontconfig fontDirectories;
       };
  -#
  -#  freealut = callPackage ../development/libraries/freealut { };
  -#
  -#  freenect = callPackage ../development/libraries/freenect { };
   
     frei0r = callPackage ../development/libraries/frei0r { };
   
     fribidi = callPackage ../development/libraries/fribidi { };
   #
  -#  funambol = callPackage ../development/libraries/funambol { };
  -#
  -#  ganv = callPackage ../development/libraries/ganv { };
  -#
  -#  gdome2 = callPackage ../development/libraries/gdome2 {
  -#    inherit (gnome) gtkdoc;
  -#  };
  -#
  -#  gecode_3 = callPackage ../development/libraries/gecode/3.nix { };
  -#  gecode_4 = callPackage ../development/libraries/gecode { };
  -#  gecode = gecode_4;
  -#
  -#  geoipWithDatabase = makeOverridable (callPackage ../development/libraries/geoip) {
  -#    drvName = "geoip-tools";
  -#    geoipDatabase = geolite-legacy;
  -#  };
  -#
  -#  geoipjava = callPackage ../development/libraries/java/geoipjava { };
  -#
  -#  geos = callPackage ../development/libraries/geos { };
  -#
  -#  getdata = callPackage ../development/libraries/getdata { };
  -#
  -#  gdal = callPackage ../development/libraries/gdal { };
  -#
  -#  gdal_1_11 = callPackage ../development/libraries/gdal/gdal-1_11.nix { };
  -#
  -#  gdcm = callPackage ../development/libraries/gdcm { };
  -#
  -#  ggz_base_libs = callPackage ../development/libraries/ggz_base_libs {};
  -#
     giblib = callPackage ../development/libraries/giblib { };
  -#
  -#  libgit2 = callPackage ../development/libraries/git2 { };
  -#
  -#  libgit2_0_21 = callPackage ../development/libraries/git2/0.21.nix { };
  -#
  -#  glew = callPackage ../development/libraries/glew { };
  -#  glew110 = callPackage ../development/libraries/glew/1.10.nix { };
   #
     glibc = callPackage ../development/libraries/glibc { };
   
     # Only supported on Linux
     glibcLocales = callPackage ../development/libraries/glibc/locales.nix { };
  -
  -#  glm = callPackage ../development/libraries/glm { };
  -#  glm_0954 = callPackage ../development/libraries/glm/0954.nix { };
  -#
  -#  glog = callPackage ../development/libraries/glog { };
  -#
  -#  gloox = callPackage ../development/libraries/gloox { };
  -#
  -#  glpk = callPackage ../development/libraries/glpk { };
   #
     gmime = callPackage ../development/libraries/gmime { };
   #
  -#  gmm = callPackage ../development/libraries/gmm { };
  -#
  -#  goocanvas = callPackage ../development/libraries/goocanvas { };
  -#
  -#  grib-api = callPackage ../development/libraries/grib-api { };
  -#
  -#  qt-mobility = callPackage ../development/libraries/qt-mobility {};
  -#
  -#  qt_gstreamer = callPackage ../development/libraries/gstreamer/legacy/qt-gstreamer {};
  -#
  -#  qt_gstreamer1 = callPackage ../development/libraries/gstreamer/qt-gstreamer { boost = boost155;};
  -#
  -#  gnet = callPackage ../development/libraries/gnet { };
  -#
     gom = callPackage ../all-pkgs/gom { };
   #
  -#  gpac = callPackage ../applications/video/gpac { };
  -#
     gpgme = callPackage ../development/libraries/gpgme { };
   #
  -#  gpgstats = callPackage ../tools/security/gpgstats { };
  -#
  -#  grantlee = callPackage ../development/libraries/grantlee { };
  -#
  -#  gsasl = callPackage ../development/libraries/gsasl { };
  -#
     gsl = callPackage ../development/libraries/gsl { };
   #
  -#  gsl_1 = callPackage ../development/libraries/gsl/gsl-1_16.nix { };
  -#
  -#  gsoap = callPackage ../development/libraries/gsoap { };
  -#
     gss = callPackage ../development/libraries/gss { };
  -#
  -#  gtkmathview = callPackage ../development/libraries/gtkmathview { };
   #
     gtkLibs = {
       inherit (pkgs) glib glibmm atk atkmm cairo pango pangomm gdk-pixbuf gtk2
         gtkmm2;
     };
   #
  -#  gnome-sharp = callPackage ../development/libraries/gnome-sharp {};
  -#
  -#  gtk-sharp = callPackage ../development/libraries/gtk-sharp-2 {
  -#    inherit (gnome) libglade libgtkhtml gtkhtml
  -#              libgnomecanvas libgnomeui libgnomeprint
  -#              libgnomeprintui GConf gnomepanel;
  -#  };
  -#
  -#  gtkspellmm = callPackage ../development/libraries/gtkspellmm { };
  -#
     gts = callPackage ../development/libraries/gts { };
   #
  -#  gwenhywfar = callPackage ../development/libraries/gwenhywfar { };
  -#
  -#  hamlib = callPackage ../development/libraries/hamlib { };
  -#
  -#  # TODO : Let admin choose.
  -#  # We are using mit-krb5 because it is better maintained
  -#  heimdal_full = callPackage ../development/libraries/kerberos/heimdal.nix { };
  -#
  -#  heimdal_lib = callPackageAlias "heimdal_full" {
  -#    type = "lib";
  -#  };
  -#
  -#  hawknl = callPackage ../development/libraries/hawknl { };
  -#
  -#  herqq = callPackage ../development/libraries/herqq { };
  -#
  -#  heyefi = haskellPackages.heyefi;
  -#
  -#  hidapi = callPackage ../development/libraries/hidapi { };
  -#
  -#  hivex = callPackage ../development/libraries/hivex {
  -#    inherit (perlPackages) IOStringy;
  -#  };
  -#
  -#  hspell = callPackage ../development/libraries/hspell { };
  -#
  -#  hspellDicts = callPackage ../development/libraries/hspell/dicts.nix { };
  -#
  -#  hsqldb = callPackage ../development/libraries/java/hsqldb { };
  -#
  -#  hstr = callPackage ../applications/misc/hstr { };
  -#
  -#  htmlcxx = callPackage ../development/libraries/htmlcxx { };
  -#
  -#  http-parser = callPackage ../development/libraries/http-parser { inherit (pythonPackages) gyp; };
  -#
  -#  hunspellDicts = recurseIntoAttrs (callPackages ../development/libraries/hunspell/dictionaries.nix {});
  -#
  -#  hwloc = callPackage ../development/libraries/hwloc {};
  -#
  -#  hydraAntLogger = callPackage ../development/libraries/java/hydra-ant-logger { };
  -#
  -#  hyena = callPackage ../development/libraries/hyena { };
  -#
  -#  iksemel = callPackage ../development/libraries/iksemel { };
  -#
  -#  ilbc = callPackage ../development/libraries/ilbc { };
  -#
  -#  ilixi = callPackage ../development/libraries/ilixi { };
  -#
     ilmbase = callPackage ../development/libraries/ilmbase { };
   #
  -#  imv = callPackage ../applications/graphics/imv/default.nix { };
  -#
     imlib2 = callPackage ../development/libraries/imlib2 { };
   
     ijs = callPackage ../development/libraries/ijs { };
   #
  -#  incrtcl = callPackage ../development/libraries/incrtcl { };
  -#
  -#  indicator-application-gtk2 = callPackage ../development/libraries/indicator-application/gtk2.nix { };
  -#  indicator-application-gtk3 = callPackage ../development/libraries/indicator-application/gtk3.nix { };
  -#
  -#  indilib = callPackage ../development/libraries/indilib { };
  -#
  -#  ip2location-c = callPackage ../development/libraries/ip2location-c { };
  -#
  -#  irrlicht = callPackage ../development/libraries/irrlicht { };
  -#  irrlicht3843 = callPackage ../development/libraries/irrlicht/irrlicht3843.nix { };
  -#
  -#  itk = callPackage ../development/libraries/itk { };
  -#
     jasper = callPackage ../development/libraries/jasper { };
   #
  -#  jama = callPackage ../development/libraries/jama { };
  -#
     jbig2dec = callPackage ../development/libraries/jbig2dec { };
   
     jbigkit = callPackage ../development/libraries/jbigkit { };
  -
  -#  jetty_gwt = callPackage ../development/libraries/java/jetty-gwt { };
  -#
  -#  jetty_util = callPackage ../development/libraries/java/jetty-util { };
  -#
  -#  jshon = callPackage ../development/tools/parsing/jshon { };
  -#
  -#  libjson = callPackage ../development/libraries/libjson { };
  -#
  -#  libb64 = callPackage ../development/libraries/libb64 { };
  -#
  -#  keybinder = callPackage ../development/libraries/keybinder {
  -#    automake = automake111x;
  -#  };
  -#
  -#  keybinder3 = callPackage ../development/libraries/keybinder3 {
  -#    automake = automake111x;
  -#  };
  -#
  -#  kinetic-cpp-client = callPackage ../development/libraries/kinetic-cpp-client { };
  -#
  -#  LASzip = callPackage ../development/libraries/LASzip { };
   #
     lcms = callPackageAlias "lcms1" { };
   
  
positive.code:     '';
    };
  #
  #  checkpolicy = callPackage ../os-specific/linux/checkpolicy { };
  #
  #  checksec = callPackage ../os-specific/linux/checksec { };
  #
  #  conky = callPackage ../os-specific/linux/conky ({ } // config.conky or {});
  #
  #  cpufrequtils = callPackage ../os-specific/linux/cpufrequtils { };
  #
  #  cryopid = callPackage ../os-specific/linux/cryopid { };
  #
  #  criu = callPackage ../os-specific/linux/criu { };
  #
  #  cramfsswap = callPackage ../os-specific/linux/cramfsswap { };
  #
  #  crda = callPackage ../os-specific/linux/crda { };
  #
  #  gnustep-make = callPackage ../development/tools/build-managers/gnustep/make { };
  #  gnustep-xcode = callPackage ../development/tools/build-managers/gnustep/xcode { };
  #
  #  disk_indicator = callPackage ../os-specific/linux/disk-indicator { };
  #
  #  dmtcp = callPackage ../os-specific/linux/dmtcp { };
  #
  #  dietlibc = callPackage ../os-specific/linux/dietlibc { };
  #
  #  directvnc = callPackage ../os-specific/linux/directvnc { };
  #
  #  drbd = callPackage ../os-specific/linux/drbd { };
  #
  #  dstat = callPackage ../os-specific/linux/dstat { };
  #
  #  light = callPackage ../os-specific/linux/light { };
  #
  #  lightum = callPackage ../os-specific/linux/lightum { };
  #
  #  e3cfsprogs = callPackage ../os-specific/linux/e3cfsprogs { };
  #
  #  ebtables = callPackage ../os-specific/linux/ebtables { };
  #
  #  facetimehd-firmware = callPackage ../os-specific/linux/firmware/facetimehd-firmware { };
  #
  #  fanctl = callPackage ../os-specific/linux/fanctl {
  #    iproute = iproute.override { enableFan = true; };
  #  };
  #
  #  fatrace = callPackage ../os-specific/linux/fatrace { };
  #
    ffado_full = callPackage ../os-specific/linux/ffado { };
  
    ffado_lib = callPackage ../os-specific/linux/ffado {
      prefix = "lib";
    };
  #
  #  fbterm = callPackage ../os-specific/linux/fbterm { };
  #
  #  firejail = callPackage ../os-specific/linux/firejail {};
  #
  #  freefall = callPackage ../os-specific/linux/freefall { };
  #
  #  fusionio-util = callPackage ../os-specific/linux/fusionio/util.nix { };
  #
  #  fxload = callPackage ../os-specific/linux/fxload { };
  #
  #  gfxtablet = callPackage ../os-specific/linux/gfxtablet {};
  #
  #  gradm = callPackage ../os-specific/linux/gradm {
  #    flex = flex_2_5_35;
  #  };
  #
  #  hibernate = callPackage ../os-specific/linux/hibernate { };
  #
  #  hostapd = callPackage ../os-specific/linux/hostapd { };
  #
  #  i7z = callPackage ../os-specific/linux/i7z { };
  #
  #  ima-evm-utils = callPackage ../os-specific/linux/ima-evm-utils { };
  #
  #  iomelt = callPackage ../os-specific/linux/iomelt { };
  #
  #  irqbalance = callPackage ../os-specific/linux/irqbalance { };
  #
  #  jfbview = callPackage ../os-specific/linux/jfbview { };
  #
  #  jool-cli = callPackage ../os-specific/linux/jool/cli.nix { };
  #
  #  jujuutils = callPackage ../os-specific/linux/jujuutils { };
  #
  #  kbdlight = callPackage ../os-specific/linux/kbdlight { };
  #
  #  latencytop = callPackage ../os-specific/linux/latencytop { };
  #
  #  ldm = callPackage ../os-specific/linux/ldm { };
  #
  #  libcgroup = callPackage ../os-specific/linux/libcgroup { };
  #
  #  linuxConsoleTools = callPackage ../os-specific/linux/consoletools { };
  #
  #  openiscsi = callPackage ../os-specific/linux/open-iscsi { };
  #
  #  tgt = callPackage ../tools/networking/tgt { };
  #
  #  # -- Linux kernel expressions ------------------------------------------------
  #
  
negative.code: 
    libungif = callPackage ../development/libraries/giflib/libungif.nix { };
  #
    libvisio = callPackage ../development/libraries/libvisio { };
  
    libvisual = callPackage ../development/libraries/libvisual { };
  #
    libwmf = callPackage ../development/libraries/libwmf { };
  #
    libwpd = callPackage ../development/libraries/libwpd { };
  #
    libwpg = callPackage ../development/libraries/libwpg { };
  #
    libxmlxx = callPackage ../development/libraries/libxmlxx { };
  #
    libzen = callPackage ../development/libraries/libzen { };
  
    libzip = callPackage ../development/libraries/libzip { };
  #
    log4cplus = callPackage ../development/libraries/log4cplus { };
  #
    neon = callPackage ../development/libraries/neon {
      compressionSupport = true;
      sslSupport = true;
    };
  #
    newt = callPackage ../development/libraries/newt { };
  #
    openal = callPackageAlias "openalSoft" { };
    openalSoft = callPackage ../development/libraries/openal-soft { };
  #
    opencv = callPackage ../development/libraries/opencv { };
  #
    openexr = callPackage ../development/libraries/openexr { };
  #
    openh264 = callPackage ../development/libraries/openh264 { };
  #
  