anchor.diff:  
         config = (import lib/eval-config.nix {
           inherit system;
  -        modules = [ module versionModule ];
  +        modules = [ configuration module versionModule ];
         }).config;
   
         tarball = config.system.build.tarball;
  
positive.code: 
      hydraJob ((import lib/eval-config.nix {
        inherit system;
        modules = [ module versionModule ];
      }).config.system.build.sdImage);
  
  
  
negative.code: 
      hydraJob ((import lib/eval-config.nix {
        inherit system;
        modules = [ configuration module versionModule { isoImage.isoBaseName = "nixos-${type}"; } ];
      }).config.system.build.isoImage);
  
  
  