anchor.diff:  
     liblscp = callPackage ../development/libraries/liblscp { };
   
  -  libev = builderDefsPackage ../development/libraries/libev {
  -  };
  +  libev = builderDefsPackage ../development/libraries/libev { };
   
     libevent = callPackage ../development/libraries/libevent { };
   
  
positive.code: 
    mercurial = callPackage ../applications/version-management/mercurial {
      inherit (pythonPackages) curses docutils;
      guiSupport = false;		# use mercurialFull to get hgk GUI
    };
  
    mercurialFull = lowPrio (appendToName "full" (pkgs.mercurial.override { guiSupport = true; }));
  
negative.code: 
    cromfs = callPackage ../tools/archivers/cromfs { };
  
    cron = callPackage ../tools/system/cron { };
  
    cudatoolkit = callPackage ../development/compilers/cudatoolkit {
      python = python26;
    };
  
    curl = callPackage ../tools/networking/curl rec {
      fetchurl = fetchurlBoot;
      zlibSupport = true;
      sslSupport = zlibSupport;
      scpSupport = zlibSupport && !stdenv.isSunOS && !stdenv.isCygwin;
    };
  