anchor.diff:  
     lcms2 = callPackage ../development/libraries/lcms2 { };
   #
  -#  lesstif = callPackage ../development/libraries/lesstif { };
  -#
  -#  levmar = callPackage ../development/libraries/levmar { };
  -#
  -#  lib3ds = callPackage ../development/libraries/lib3ds { };
  -#
     libaacs = callPackage ../development/libraries/libaacs { };
  -#
  -#  libaal = callPackage ../development/libraries/libaal { };
   
     libao = callPackage ../development/libraries/libao { };
   #
  -#  libabw = callPackage ../development/libraries/libabw { };
  -#
  -#  libantlr3c = callPackage ../development/libraries/libantlr3c {};
  -#
  -#  libappindicator-gtk2 = callPackage ../development/libraries/libappindicator { gtkVersion = "2"; };
  -#  libappindicator-gtk3 = callPackage ../development/libraries/libappindicator { gtkVersion = "3"; };
  -#
     libasyncns = callPackage ../development/libraries/libasyncns { };
   #
  -#  libaudclient = callPackage ../development/libraries/libaudclient { };
  -#
  -#  libav = libav_11; # branch 11 is API-compatible with branch 10
  -#  libav_all = callPackage ../development/libraries/libav { };
  -#  inherit (libav_all) libav_0_8 libav_9 libav_11;
  -#
  -#  libb2 = callPackage ../development/libraries/libb2 { };
  -#
  -#  libbluedevil = callPackage ../development/libraries/libbluedevil { };
  -#
     libbdplus = callPackage ../development/libraries/libbdplus { };
   
     libbs2b = callPackage ../development/libraries/audio/libbs2b { };
   #
  -#  libbson = callPackage ../development/libraries/libbson { };
  -#
     libcaca = callPackage ../development/libraries/libcaca { };
   #
  -#  libcec = callPackage ../development/libraries/libcec { };
  -#  libcec_platform = callPackage ../development/libraries/libcec/platform.nix { };
  -#
  -#  libcello = callPackage ../development/libraries/libcello {};
  -#
  -#  libcdaudio = callPackage ../development/libraries/libcdaudio { };
  -#
     libcddb = callPackage ../development/libraries/libcddb { };
   
     libcdio = callPackage ../development/libraries/libcdio { };
  -#  libcdio082 = callPackage ../development/libraries/libcdio/0.82.nix { };
   #
     libcdr = callPackage ../development/libraries/libcdr { lcms = callPackageAlias "lcms2" { }; };
   #
  -#  libchamplain = callPackage ../development/libraries/libchamplain { };
  -#
  -#  libchardet = callPackage ../development/libraries/libchardet { };
  -#
  -#  libchewing = callPackage ../development/libraries/libchewing { };
  -#
  -#  libcrafter = callPackage ../development/libraries/libcrafter { };
  -#
  -#  libuchardet = callPackage ../development/libraries/libuchardet { };
  -#
  -#  libchop = callPackage ../development/libraries/libchop { };
  -#
  -#  libcli = callPackage ../development/libraries/libcli { };
  -#
  -#  libclthreads = callPackage ../development/libraries/libclthreads  { };
  -#
  -#  libclxclient = callPackage ../development/libraries/libclxclient  { };
  -#
  -#  libcm = callPackage ../development/libraries/libcm { };
  -#
  -#  libcommuni = callPackage ../development/libraries/libcommuni { };
  -#
  -#  libconfuse = callPackage ../development/libraries/libconfuse { };
  -#
  -#  libcangjie = callPackage ../development/libraries/libcangjie { };
  -#
  -#  libcredis = callPackage ../development/libraries/libcredis { };
  -#
  -#  libctemplate = callPackage ../development/libraries/libctemplate { };
  -#
  -#  libctemplate_2_2 = callPackage ../development/libraries/libctemplate/2.2.nix { };
  -#
  -#  libcouchbase = callPackage ../development/libraries/libcouchbase { };
  -#
  -#  libcutl = callPackage ../development/libraries/libcutl { };
  -#
     libdaemon = callPackage ../development/libraries/libdaemon { };
   #
  -#  libdbi = callPackage ../development/libraries/libdbi { };
  -#
  -#  libdbiDriversBase = callPackage ../development/libraries/libdbi-drivers {
  -#    libmysql = null;
  -#    sqlite = null;
  -#  };
  -#
  -#  libdbiDrivers = libdbiDriversBase.override {
  -#    inherit sqlite libmysql;
  -#  };
  -#
  -#  libdbusmenu-glib = callPackage ../development/libraries/libdbusmenu { };
  -#  libdbusmenu-gtk2 = callPackage ../development/libraries/libdbusmenu { gtkVersion = "2"; };
  -#  libdbusmenu-gtk3 = callPackage ../development/libraries/libdbusmenu { gtkVersion = "3"; };
  -#
  -#  libdbusmenu_qt = callPackage ../development/libraries/libdbusmenu-qt { };
  -#
     libdiscid = callPackage ../development/libraries/libdiscid { };
   #
  -#  libdivsufsort = callPackage ../development/libraries/libdivsufsort { };
  -#
  -#  libdmtx = callPackage ../development/libraries/libdmtx { };
  -#
  -#  libdnet = callPackage ../development/libraries/libdnet { };
  -#
  -#  libdv = callPackage ../development/libraries/libdv { };
  -#
     libdvbpsi = callPackage ../development/libraries/libdvbpsi { };
   #
  -#  libdwg = callPackage ../development/libraries/libdwg { };
  -#
     libdvdcss = callPackage ../development/libraries/libdvdcss { };
   
     libdvdnav = callPackage ../development/libraries/libdvdnav { };
  -#  libdvdnav_4_2_1 = callPackage ../development/libraries/libdvdnav/4.2.1.nix {
  -#    libdvdread = libdvdread_4_9_9;
  -#  };
   #
     libdvdread = callPackage ../development/libraries/libdvdread { };
  -#  libdvdread_4_9_9 = callPackage ../development/libraries/libdvdread/4.9.9.nix { };
  -#
  -#  libdwarf = callPackage ../development/libraries/libdwarf { };
  -#
  -#  libeatmydata = callPackage ../development/libraries/libeatmydata { };
  -#
  -#  libeb = callPackage ../development/libraries/libeb { };
  -#
  -#  libebur128 = callPackage ../development/libraries/libebur128 { };
  -#
  -#  libetpan = callPackage ../development/libraries/libetpan { };
  -#
  -#  libfakekey = callPackage ../development/libraries/libfakekey { };
  -#
  -#  libfm = callPackage ../development/libraries/libfm { };
  -#  libfm-extra = callPackage ../development/libraries/libfm {
  -#    extraOnly = true;
  -#  };
  -#
  -#  libfprint = callPackage ../development/libraries/libfprint { };
  -#
  -#  libgadu = callPackage ../development/libraries/libgadu { };
  -#
  -#  libgig = callPackage ../development/libraries/libgig { };
  -#
  -#  libgnurl = callPackage ../development/libraries/libgnurl { };
  -#
  -#  libgringotts = callPackage ../development/libraries/libgringotts { };
  -#
  -#  libgroove = callPackage ../development/libraries/libgroove { };
  -#
  -#  libserialport = callPackage ../development/libraries/libserialport { };
  -#
  -#  libsoundio = callPackage ../development/libraries/libsoundio { };
   #
     libgtop = callPackage ../development/libraries/libgtop {};
   #
  -#  libLAS = callPackage ../development/libraries/libLAS { };
  -#
  -#  liblaxjson = callPackage ../development/libraries/liblaxjson { };
  -#
  -#  liblo = callPackage ../development/libraries/liblo { };
  -#
  -#  liblscp = callPackage ../development/libraries/liblscp { };
  -#
  -#  libe-book = callPackage ../development/libraries/libe-book {};
  -#
  -#  libechonest = callPackage ../development/libraries/libechonest { };
  -#
  -#  libewf = callPackage ../development/libraries/libewf { };
  -#
     libexif = callPackage ../development/libraries/libexif { };
   #
  -#  libexosip = callPackage ../development/libraries/exosip {};
  -#
  -#  libexosip_3 = callPackage ../development/libraries/exosip/3.x.nix {
  -#    libosip = libosip_3;
  -#  };
  -#
  -#  libextractor = callPackage ../development/libraries/libextractor {
  -#    libmpeg2 = mpeg2dec;
  -#  };
  -#
  -#  libexttextcat = callPackage ../development/libraries/libexttextcat {};
  -#
  -#  libf2c = callPackage ../development/libraries/libf2c {};
  -#
  -#  libfixposix = callPackage ../development/libraries/libfixposix {};
  -#
  -#  libffcall = callPackage ../development/libraries/libffcall { };
  -#
  -#
  -#  libfreefare = callPackage ../development/libraries/libfreefare { };
  -#
  -#  libftdi = callPackage ../development/libraries/libftdi { };
  -#
  -#  libftdi1 = callPackage ../development/libraries/libftdi/1.x.nix { };
  -#
  -#  libgdiplus = callPackage ../development/libraries/libgdiplus { };
  -#
  -#  libgsystem = callPackage ../development/libraries/libgsystem { };
  -#
  -#  libguestfs = callPackage ../development/libraries/libguestfs {
  -#    inherit (perlPackages) libintlperl GetoptLong SysVirt;
  -#  };
  -#
  -#  libhangul = callPackage ../development/libraries/libhangul { };
  -#
  -#  libharu = callPackage ../development/libraries/libharu { };
  -#
  -#  libHX = callPackage ../development/libraries/libHX { };
  -#
  -#  libibmad = callPackage ../development/libraries/libibmad { };
  -#
  -#  libibumad = callPackage ../development/libraries/libibumad { };
  -#
  -#  libicns = callPackage ../development/libraries/libicns { };
  -#
     libimobiledevice = callPackage ../development/libraries/libimobiledevice { };
   #
  -#  libindicate-gtk2 = callPackage ../development/libraries/libindicate { gtkVersion = "2"; };
  -#  libindicate-gtk3 = callPackage ../development/libraries/libindicate { gtkVersion = "3"; };
  -#
  -#  libindicator-gtk2 = callPackage ../development/libraries/libindicator { gtkVersion = "2"; };
  -#  libindicator-gtk3 = callPackage ../development/libraries/libindicator { gtkVersion = "3"; };
  -#
  -#  libiodbc = callPackage ../development/libraries/libiodbc {
  -#    useGTK = config.libiodbc.gtk or false;
  -#  };
  -#
  -#  libivykis = callPackage ../development/libraries/libivykis { };
  -#
  -#  liblastfmSF = callPackage ../development/libraries/liblastfmSF { };
  -#
  -#  liblastfm = callPackage ../development/libraries/liblastfm { };
  -#
     liblqr1 = callPackage ../development/libraries/liblqr-1 { };
   #
  -#  liblockfile = callPackage ../development/libraries/liblockfile { };
  -#
  -#  liblognorm = callPackage ../development/libraries/liblognorm { };
  -#
  -#  libltc = callPackage ../development/libraries/libltc { };
  -#
     libmediainfo = callPackage ../development/libraries/libmediainfo { };
   #
  -#  libmodbus = callPackage ../development/libraries/libmodbus {};
  -#
     libnatspec = callPackage ../development/libraries/libnatspec { };
   #
     libndp = callPackage ../development/libraries/libndp { };
   #
  -#  libnfc = callPackage ../development/libraries/libnfc { };
  -#
  -#  libnfsidmap = callPackage ../development/libraries/libnfsidmap { };
  -#
  -#  libnice = callPackage ../development/libraries/libnice { };
  -#
  -#  liboping = callPackage ../development/libraries/liboping { };
  -#
     libplist = callPackage ../development/libraries/libplist { };
   #
  -#  libqglviewer = callPackage ../development/libraries/libqglviewer { };
  -#
  -#  libre = callPackage ../development/libraries/libre {};
  -#  librem = callPackage ../development/libraries/librem {};
  -#
  -#  libresample = callPackage ../development/libraries/libresample {};
  -#
     librevenge = callPackage ../development/libraries/librevenge {};
   #
  -#  librevisa = callPackage ../development/libraries/librevisa { };
  -#
     libsamplerate = callPackage ../development/libraries/libsamplerate { };
  -#
  -#  libsieve = callPackage ../development/libraries/libsieve { };
   
     libid3tag = callPackage ../development/libraries/libid3tag { };
   
  
positive.code: 
    libungif = callPackage ../development/libraries/giflib/libungif.nix { };
  #
  #  libunibreak = callPackage ../development/libraries/libunibreak { };
  #
  #  libvdpau-va-gl = callPackage ../development/libraries/libvdpau-va-gl { };
  #
  #  libvirt = callPackage ../development/libraries/libvirt { };
  #
  #  libvirt-glib = callPackage ../development/libraries/libvirt-glib { };
  #
    libvisio = callPackage ../development/libraries/libvisio { };
  
    libvisual = callPackage ../development/libraries/libvisual { };
  #
  #  libvncserver = callPackage ../development/libraries/libvncserver {};
  #
  #  libviper = callPackage ../development/libraries/libviper { };
  #
  #  libvterm = callPackage ../development/libraries/libvterm { };
  #
    libwmf = callPackage ../development/libraries/libwmf { };
  #
  #  libwnck = libwnck2;
  #  libwnck2 = callPackage ../development/libraries/libwnck { };
  #  libwnck3 = callPackage ../development/libraries/libwnck/3.x.nix { };
  #
    libwpd = callPackage ../development/libraries/libwpd { };
  #
  #  libwpd_08 = callPackage ../development/libraries/libwpd/0.8.nix { };
  #
    libwpg = callPackage ../development/libraries/libwpg { };
  #
  #  libx86 = callPackage ../development/libraries/libx86 {};
  #
  #  libxdg_basedir = callPackage ../development/libraries/libxdg-basedir { };
  #
  #  libxls = callPackage ../development/libraries/libxls { };
  #
  #  libxmi = callPackage ../development/libraries/libxmi { };
  #
    libxmlxx = callPackage ../development/libraries/libxmlxx { };
  #
  #  libxmp = callPackage ../development/libraries/libxmp { };
  #
  #  libixp_hg = callPackage ../development/libraries/libixp-hg { };
  #
  #  libykneomgr = callPackage ../development/libraries/libykneomgr { };
  #
  #  libyubikey = callPackage ../development/libraries/libyubikey { };
  #
    libzen = callPackage ../development/libraries/libzen { };
  
    libzip = callPackage ../development/libraries/libzip { };
  #
  #  libzdb = callPackage ../development/libraries/libzdb { };
  #
  #  libzrtpcpp = callPackage ../development/libraries/libzrtpcpp { };
  #
  #  lightning = callPackage ../development/libraries/lightning { };
  #
  #  lightlocker = callPackage ../misc/screensavers/light-locker { };
  #
  #  liquidfun = callPackage ../development/libraries/liquidfun { };
  #
  #  log4cpp = callPackage ../development/libraries/log4cpp { };
  #
  #  log4cxx = callPackage ../development/libraries/log4cxx { };
  #
    log4cplus = callPackage ../development/libraries/log4cplus { };
  #
  #  loudmouth = callPackage ../development/libraries/loudmouth { };
  #
  #  luabind = callPackage ../development/libraries/luabind { };
  #
  #  luabind_luajit = callPackage ../development/libraries/luabind { lua = luajit; };
  #
  #  mapnik = callPackage ../development/libraries/mapnik { };
  #
  #  matio = callPackage ../development/libraries/matio { };
  #
  #  mbedtls = callPackage ../development/libraries/mbedtls { };
  #
  #  mdds_0_7_1 = callPackage ../development/libraries/mdds/0.7.1.nix { };
  #  mdds = callPackage ../development/libraries/mdds { };
  #
  #  mediastreamer = callPackage ../development/libraries/mediastreamer { };
  #
  #  mediastreamer-openh264 = callPackage ../development/libraries/mediastreamer/msopenh264.nix { };
  #
  #  menu-cache = callPackage ../development/libraries/menu-cache { };
  #
  #  meterbridge = callPackage ../applications/audio/meterbridge { };
  #
  #  mhddfs = callPackage ../tools/filesystems/mhddfs { };
  #
  #  ming = callPackage ../development/libraries/ming { };
  #
  #  minmay = callPackage ../development/libraries/minmay { };
  #
  #  miro = callPackage ../applications/video/miro {
  #    inherit (pythonPackages) pywebkitgtk pycurl mutagen;
  #  };
  #
  #  mlt-qt4 = callPackage ../development/libraries/mlt {
  #    qt = qt4;
  #  };
  #
  #  movit = callPackage ../development/libraries/movit { };
  #
  #  mosquitto = callPackage ../servers/mqtt/mosquitto { };
  #
  #  mps = callPackage ../development/libraries/mps { };
  
  #  msilbc = callPackage ../development/libraries/msilbc { };
  #
  #  mpich2 = callPackage ../development/libraries/mpich2 { };
  #
  #  mstpd = callPackage ../os-specific/linux/mstpd { };
  #
  #  mtpfs = callPackage ../tools/filesystems/mtpfs { };
  #
  #  mueval = callPackage ../development/tools/haskell/mueval { };
  #
  #  muparser = callPackage ../development/libraries/muparser { };
  #
  #  mygpoclient = pythonPackages.mygpoclient;
  #
  #  mygui = callPackage ../development/libraries/mygui {};
  #
  #  mysocketw = callPackage ../development/libraries/mysocketw { };
  #
  #  mythes = callPackage ../development/libraries/mythes { };
  #
  #  nanomsg = callPackage ../development/libraries/nanomsg { };
  #
  #  neardal = callPackage ../development/libraries/neardal { };
  #
    neon = callPackage ../development/libraries/neon {
      compressionSupport = true;
      sslSupport = true;
    };
  #
  #  neon_0_29 = callPackage ../development/libraries/neon/0.29.nix {
  #    compressionSupport = true;
  #    sslSupport = true;
  #  };
  #
    newt = callPackage ../development/libraries/newt { };
  
  #
  #  nix-plugins = callPackage ../development/libraries/nix-plugins {
  #    nix = pkgs.nixUnstable;
  #  };
  #
  #  nntp-proxy = callPackage ../applications/networking/nntp-proxy { };
  #
  #  non = callPackage ../applications/audio/non { };
  #
  #  nssTools = callPackage ../development/libraries/nss {
  #    includeTools = true;
  #  };
  #
  #  ntk = callPackage ../development/libraries/audio/ntk { };
  #
  #  ntrack = callPackage ../development/libraries/ntrack { };
  #
  #  nvidia-texture-tools = callPackage ../development/libraries/nvidia-texture-tools { };
  #
  #  ode = callPackage ../development/libraries/ode { };
  #
  #  ogre = callPackage ../development/libraries/ogre {};
  #
  #  ogrepaged = callPackage ../development/libraries/ogrepaged { };
  #
    openal = callPackageAlias "openalSoft" { };
    openalSoft = callPackage ../development/libraries/openal-soft { };
  #
  #  openbabel = callPackage ../development/libraries/openbabel { };
  #
  #  opencascade = callPackage ../development/libraries/opencascade {
  #    tcl = tcl-8_5;
  #    tk = tk-8_5;
  #  };
  #
  #  opencascade_6_5 = callPackage ../development/libraries/opencascade/6.5.nix {
  #    automake = automake111x;
  #    ftgl = ftgl212;
  #  };
  #
  #  opencascade_oce = callPackage ../development/libraries/opencascade/oce.nix { };
  #
  #  opencollada = callPackage ../development/libraries/opencollada { };
  #
  #  opencsg = callPackage ../development/libraries/opencsg { };
  #
  #  openct = callPackage ../development/libraries/openct { };
  #
    opencv = callPackage ../development/libraries/opencv { };
  #
  #  opencv3 = callPackage ../development/libraries/opencv/3.x.nix { };
  #
  #  # this ctl version is needed by openexr_viewers
  #  openexr_ctl = ctl;
  #
    openexr = callPackage ../development/libraries/openexr { };
  
  #  opencolorio = callPackage ../development/libraries/opencolorio { };
  #
  #  ois = callPackage ../development/libraries/ois {};
  #
  #  opal = callPackage ../development/libraries/opal {};
  #
    openh264 = callPackage ../development/libraries/openh264 { };
  #
  
negative.code:     '';
    };
  #
    ffado_full = callPackage ../os-specific/linux/ffado { };
  
    ffado_lib = callPackage ../os-specific/linux/ffado {
      prefix = "lib";
    };
  #
  #  # -- Linux kernel expressions ------------------------------------------------
  #
  