anchor.diff:  
       maudeMode = callPackage ../applications/editors/emacs-modes/maude { };
   
  -    notmuch = callPackage ../applications/networking/mailreaders/notmuch { };
  +    notmuch = lowPrio (callPackage ../applications/networking/mailreaders/notmuch { });
   
       # This is usually a newer version of Org-Mode than that found in GNU Emacs, so
       # we want it to have higher precedence.
  
positive.code:     python = pypy;
    });
  
    plone41Packages = recurseIntoAttrs (import ../development/web/plone/4.1.nix {
      inherit pkgs;
      pythonPackages = python26Packages;
    });
  
    plone42Packages = recurseIntoAttrs (import ../development/web/plone/4.2.nix {
      inherit pkgs;
      pythonPackages = python26Packages;
    });
  
    plone43Packages = recurseIntoAttrs (import ../development/web/plone/4.3.nix {
      inherit pkgs;
  
negative.code:     linuxHeaders = glibc.kernelHeaders;
    };
  
    klibcShrunk = lowPrio (callPackage ../os-specific/linux/klibc/shrunk.nix { });
  
    kmod = callPackage ../os-specific/linux/kmod { };
  
  