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