config: return component from `repo_components`

We used to returns just paths. However using the same return types as
`rccomponents` will be quite useful later in this series.

mercurial/configuration/rcutil.py

@@ -152,13 +152,13 def _shared_source_component(path: bytes
     return []
 
 
-def repo_components(repo_path: bytes) -> List[FileRCT]:
+def repo_components(repo_path: bytes) -> List[ComponentT]:
     """return the list of config file to read for a repository"""
     components = []
     components.extend(_shared_source_component(repo_path))
     components.append(os.path.join(repo_path, b".hg", b"hgrc"))
     components.append(os.path.join(repo_path, b".hg", b"hgrc-not-shared"))
-    return components
+    return [(b'path', c) for c in components]
 
 
 def defaultpagerenv() -> Dict[bytes, bytes]:

mercurial/dispatch.py

@@ -954,7 +954,8 def _getlocal(ui, rpath, wd=None):
     else:
         lui = ui.copy()
         if rcutil.use_repo_hgrc():
-            for rc_path in rcutil.repo_components(path):
+            for c_type, rc_path in rcutil.repo_components(path):
+                assert c_type == b'path'
                 lui.readconfig(rc_path, root=path)
 
     if rpath:
@@ -965,7 +966,8 def _getlocal(ui, rpath, wd=None):
         path = path_obj.rawloc
         lui = ui.copy()
         if rcutil.use_repo_hgrc():
-            for rc_path in rcutil.repo_components(path):
+            for c_type, rc_path in rcutil.repo_components(path):
+                assert c_type == b'path'
                 lui.readconfig(rc_path, root=path)
 
     if oldcwd: