anchor.diff:        packagesLists =
           [ (fetchurl {
               url = mirror://ubuntu/dists/trusty/main/binary-i386/Packages.bz2;
  -            sha256 = "fdfc38663915c5cef3029872deb8c3bf52b98092073058086e2f1db0c71ebeb4";
  +            sha256 = "1d5y3v3v079gdq45hc07ja0bjlmzqfwdwwlq0brwxi8m75k3iz7x";
             })
             (fetchurl {
               url = mirror://ubuntu/dists/trusty/universe/binary-i386/Packages.bz2;
  -            sha256 = "2afcf259332d88c5e02f5446c4926edd567ef1a00ce24ca7cb400cbf44e2a90f";
  +            sha256 = "03x9w92by320rfklrqhcl3qpwmnxds9c8ijl5zhcb21d6dcz5z1a";
             })
           ];
         urlPrefix = mirror://ubuntu;
  
positive.code:     # Needed because it provides /etc/login.defs, whose absence causes
      # the "passwd" post-installs script to fail.
      "login"
    ];
  
    commonDebianPackages = commonDebPackages ++ [ "sysvinit" "diff" "mktemp" ];
  
negative.code:     ubuntu1404x86_64 = {
        name = "ubuntu-14.04-trusty-amd64";
        fullName = "Ubuntu 14.04 Trusty (amd64)";
        packagesLists =
          [ (fetchurl {
              url = mirror://ubuntu/dists/trusty/main/binary-amd64/Packages.bz2;
              sha256 = "1hhzbyqfr5i0swahwnl5gfp5l9p9hspywb1vpihr3b74p1z935bh";
            })
            (fetchurl {
              url = mirror://ubuntu/dists/trusty/universe/binary-amd64/Packages.bz2;
              sha256 = "04560ba8s4z4v5iawknagrkn9q1nzvpn081ycmqvhh73p3p3g1jm";
            })
          ];
        urlPrefix = mirror://ubuntu;
  