anchor.diff:  #  };
   #
   #  doclifter = callPackage ../development/tools/misc/doclifter { };
  -#
  -  docutils = pythonPackages.docutils;
   #
   #  dot2tex = pythonPackages.dot2tex;
   #
  
positive.code:   lua = callPackageAlias "lua5" { };
  #
  #  lua52Packages = callPackage ./lua-packages.nix { lua = lua5_2; };
    lua53Packages = callPackage ./lua-packages.nix { lua = lua5_3; };
    luaPackages = callPackageAlias "lua53Packages" { };
  #
  #  lua5_expat = callPackage ../development/interpreters/lua-5/expat.nix {};
  
negative.code: #  xzgv = callPackage ../applications/graphics/xzgv { };
  #
  #  yate = callPackage ../applications/misc/yate { };
  #
  #  qtbitcointrader = callPackage ../applications/misc/qtbitcointrader {
  #    qt = qt4;
  