anchor.diff:      , enableOCR ? false
       , skipLint ? false
       , passthru ? {}
  +    , interactive ? false
     }:
       let
         # Reifies and correctly wraps the python test driver for
  
positive.code:         testName = name;
          qemu_pkg = pkgs.qemu;
          nodes = nodes pkgs.qemu;
        };
  
        test =
  
negative.code:         wrapProgram $out/bin/nixos-test-driver \
            --set startScripts "''${vmStartScripts[*]}" \
            --set testScript "$out/test-script" \
            --set vlans '${toString vlans}' \
            ${if interactive then "--add-flags --interactive" else ""}
        '');
  
    # Make a full-blown test
  