anchor.diff:          nix = build.x86_64-linux;
           officialRelease = false;
         };
  -    */
   
       tests.evalNixOS =
         pkgs.runCommand "eval-nixos" { buildInputs = [ build.x86_64-linux ]; }
  
positive.code: 
            touch $out
          '';
  
  
      installerScript =
  
negative.code:           tests.nix-copy-closure
            tests.binaryTarball
            #tests.evalNixpkgs
            #tests.evalNixOS
            installerScript
          ];
      };
  