anchor.diff:  
     makeSystemTarball =
       { module, maintainers ? ["viric"]}:
  -    { nixosSrc ? {outPath = ./.; rev = 1234;}
  -    , officialRelease ? false
  +    { officialRelease ? false
       , system ? "i686-linux"
       }:
   
  
positive.code: 
  
      tarball =
        { nixosSrc ? {outPath = ./.; rev = 1234;}
        , officialRelease ? false
        }:
  
        with import <nixpkgs> {};
  
  
negative.code: 
  
      manual =
        { officialRelease ? false }:
  
        (import "${nixosSrc}/doc/manual" {
          pkgs = import <nixpkgs> {};
  