anchor.diff:          nix = build.x86_64-linux;
           officialRelease = false;
         };
  +    */
   
       tests.evalNixOS =
         pkgs.runCommand "eval-nixos" { buildInputs = [ build.x86_64-linux ]; }
  
positive.code:           umount /nix
          ''); # */
  
      tests.evalNixpkgs =
        import (nixpkgs + "/pkgs/top-level/make-tarball.nix") {
          inherit nixpkgs;
  
negative.code:           tests.remoteBuilds
            tests.nix-copy-closure
            tests.binaryTarball
            #tests.evalNixpkgs
            tests.evalNixOS
            installerScript
          ];
  