anchor.diff:  
     meta = {
       homepage = http://libvirt.org/;
  -    description = "A toolkit to interact with the virtualization capabilities of recent versions of Linux (and other OSes).";
  +    description = "A toolkit to interact with the virtualization capabilities of recent versions of Linux (and other OSes)";
       license = "LGPLv2+";
       platforms = stdenv.lib.platforms.linux;
     };
  
positive.code: 
    buildInputs =
      [ pkgconfig libxml2 gnutls devicemapper perl python readline lvm2
        utillinux udev libpciaccess gettext
      ];
  
    preConfigure =
  
negative.code: { stdenv, fetchurl, pkgconfig, libxml2, gnutls, devicemapper, perl, python
  , iproute, iptables, readline, lvm2, utillinux, udev, libpciaccess, gettext 
  , libtasn1
  }:
  
  let version = "0.8.8"; in
  
  