anchor.diff:    libaio = callPackage ../os-specific/linux/libaio { };
   
     libatasmart = callPackage ../os-specific/linux/libatasmart { };
  -  
  +
     libcgroup = callPackage ../os-specific/linux/libcg { };
   
     libnl = callPackage ../os-specific/linux/libnl { };
  
positive.code:   kde47 = callPackage ../desktops/kde-4.7 {
      callPackage = newScope pkgs.kde47;
    };
      
    redshift = callPackage ../applications/misc/redshift {
      inherit (xorg) libX11 libXrandr libxcb randrproto libXxf86vm
        xf86vidmodeproto;
  
negative.code:   alsaPlugins = callPackage ../os-specific/linux/alsa-plugins {
      jackaudio = null;
    };
  
    alsaPluginWrapper = callPackage ../os-specific/linux/alsa-plugins/wrapper.nix { };
  
    alsaUtils = callPackage ../os-specific/linux/alsa-utils { };
  