anchor.diff:    lkproof = callPackage ../tools/typesetting/tex/lkproof { };
   
     mysqlWorkbench = newScope gnome ../applications/misc/mysql-workbench {
  -    lua = lua5_1;
       libctemplate = libctemplate_2_2;
       inherit (pythonPackages) pexpect paramiko;
     };
  
positive.code: 
    luakit = callPackage ../applications/networking/browsers/luakit {
        inherit (lua51Packages) luafilesystem luasqlite3;
        lua5 = lua5_1;
        gtk = gtk3;
        webkit = webkitgtk2;
    };
  
negative.code: 
    pythonmagick = callPackage ../applications/graphics/PythonMagick { };
  
    eiskaltdcpp = callPackage ../applications/networking/p2p/eiskaltdcpp { };
  
    qemu = callPackage ../applications/virtualization/qemu {
      gtk = gtk3;
  