anchor.diff:      "foo/": res2?.toString(),
       "foo/bar": res3?.toString(),
       "foo.x": fooX?.toString(),
  +    "bar/bar": res4?.toString(),
  +    "relative": res5?.toString(),
  +    "nonpkg": res6?.toString(),
     }));
   }
   """;
  
positive.code:           "iroot": "%$scheme/pkgs/",
            "foo/": "%$scheme/pkgs/foo/",
            "foo/bar": "%$scheme/pkgs/foo/bar",
          });
      }
  
  
negative.code:           "iroot": "%$scheme/packages/",
            "foo/": "%$scheme/packages/foo/",
            "foo/bar": "%$scheme/packages/foo/bar",
            "bar/bar": "%$scheme/packages/bar/bar",
          });
      }
  
  