anchor.diff:        fullName = "Debian 8.10 Jessie (amd64)";
         packagesList = fetchurl {
           url = mirror://debian/dists/jessie/main/binary-amd64/Packages.xz;
  -        sha256 = "689e77cdf5334a3fffa5ca504e8131ee9ec88a7616f12c9ea5a3d5ac3100a710";
  +        sha256 = "045700qsrmd3lng2rw8nfs5ci7pf660lwl6alpzkyjikyp6pg7k8";
         };
         urlPrefix = mirror://debian;
         packages = commonDebianPackages;
       };
  +
  +    debian9i386 = {
  +      name = "debian-9.3-stretch-i386";
  +      fullName = "Debian 9.3 Stretch (i386)";
  +      packagesList = fetchurl {
  +        url = mirror://debian/dists/stretch/main/binary-i386/Packages.xz;
  +        sha256 = "1rpv0r92pkr9dmjvpffvgmq3an1s83npfmq870h67jqag3qpwj9l";
  +      };
  +      urlPrefix = mirror://debian;
  +      packages = commonDebianPackages;
  +    };
  +
  +    debian9x86_64 = {
  +      name = "debian-9.3-stretch-amd64";
  +      fullName = "Debian 9.3 Stretch (amd64)";
  +      packagesList = fetchurl {
  +        url = mirror://debian/dists/stretch/main/binary-amd64/Packages.xz;
  +        sha256 = "1gnkvh7wc5yp0rw8kq8p8rlskvl0lc4cv3gdylw8qpqzy75xqlig";
  +      };
  +      urlPrefix = mirror://debian;
  +      packages = commonDebianPackages;
  +    };
  +
  +
     };
   
   
  
positive.code:     ubuntu1604x86_64 = {
        name = "ubuntu-16.04-xenial-amd64";
        fullName = "Ubuntu 16.04 Xenial (amd64)";
        packagesList =
          [ (fetchurl {
              url = mirror://ubuntu/dists/xenial/main/binary-amd64/Packages.xz;
              sha256 = "110qnkhjkkwm316fbig3aivm2595ydz6zskc4ld5cr8ngcrqm1bn";
  
negative.code:       packagesLists =
          [ (fetchurl {
              url = mirror://ubuntu/dists/trusty/main/binary-i386/Packages.bz2;
              sha256 = "1d5y3v3v079gdq45hc07ja0bjlmzqfwdwwlq0brwxi8m75k3iz7x";
            })
            (fetchurl {
              url = mirror://ubuntu/dists/trusty/universe/binary-i386/Packages.bz2;
              sha256 = "03x9w92by320rfklrqhcl3qpwmnxds9c8ijl5zhcb21d6dcz5z1a";
            })
          ];
        urlPrefix = mirror://ubuntu;
  