temporarily undo everything in this PR to check if it could somehow be causing a failure in an unrelated test

lib/spack/spack/repo.py

@@ -1362,21 +1362,7 @@ def get_pkg_class(self, pkg_name):
         if not inspect.isclass(cls):
             tty.die("%s.%s is not a class" % (pkg_name, class_name))
 
-        new_cfg_settings = (
-            spack.config.get("packages").get(pkg_name, {}).get("package_attributes", {})
-        )
-        overidden_attrs = getattr(cls, "overidden_attrs", {})
-        for key, val in overidden_attrs.items():
-            setattr(cls, key, val)
-        # Keep track of every class attribute that is overidden by the config:
-        # if the config changes between calls to this method, we make sure to
-        # restore the original config values (in case the new config no longer
-        # sets attributes that it used to)
-        new_overidden_attrs = {}
-        for key, val in new_cfg_settings.items():
-            new_overidden_attrs[key] = getattr(cls, key)
-            setattr(cls, key, val)
-        setattr(cls, "overidden_attrs", dict(new_overidden_attrs))
+        # TODO: restore logic here
 
         return cls
 

lib/spack/spack/test/concretize_preferences.py

@@ -179,22 +179,6 @@ def test_preferred_providers(self):
         spec = concretize("mpileaks")
         assert "zmpi" in spec
 
-    def test_config_set_url_for_package(self, mutable_mock_repo):
-        """Test preferred providers of virtual packages are
-        applied correctly
-        """
-        update_packages(
-            "mpileaks",
-            "package_attributes",
-            {"url": "http://www.somewhereelse.com/mpileaks-1.0.tar.gz"},
-        )
-        spec = concretize("mpileaks")
-        assert spec.package.fetcher[0].url == "http://www.somewhereelse.com/mpileaks-2.3.tar.gz"
-
-        update_packages("mpileaks", "package_attributes", {})
-        spec = concretize("mpileaks")
-        assert spec.package.fetcher[0].url == "http://www.llnl.gov/mpileaks-2.3.tar.gz"
-
     def test_preferred(self):
         """ "Test packages with some version marked as preferred=True"""
         spec = Spec("python")