Fix auth issues with Installation.get_repos (#2547)

github/Installation.py

@@ -35,6 +35,7 @@ import github.PaginatedList
 import github.Plan
 import github.Repository
 import github.UserKey
+from github.Auth import AppAuth
 
 from . import Consts
 
@@ -46,6 +47,16 @@ class Installation(github.GithubObject.NonCompletableGithubObject):
     This class represents Installations. The reference can be found here https://docs.github.com/en/rest/reference/apps#installations
     """
 
+    def __init__(self, requester, headers, attributes, completed):
+        super().__init__(requester, headers, attributes, completed)
+
+        auth = self._requester.auth if self._requester is not None else None
+        # Usually, an Installation is created from a Requester with App authentication
+        if isinstance(auth, AppAuth):
+            # But the installation has to authenticate as an installation (e.g. for get_repos())
+            auth = auth.get_installation_auth(self.id, requester=self._requester)
+            self._requester = self._requester.withAuth(auth)
+
     def __repr__(self):
         return self.get__repr__({"id": self._id.value})
 

github/Requester.py

@@ -343,6 +343,10 @@ class Requester:
     def base_url(self):
         return self.__base_url
 
+    @property
+    def auth(self):
+        return self.__auth
+
     def withAuth(self, auth):
         """
         Create a new requester instance with identical configuration but the given authentication method.

github/Requester.pyi

@@ -141,6 +141,8 @@ class Requester:
     ) -> None: ...
     @property
     def base_url(self) -> str: ...
+    @property
+    def auth(self) -> Optional[Auth]: ...
     def withAuth(self, auth: Optional[Auth]) -> Requester: ...
     def _initializeDebugFeature(self) -> None: ...
     def check_me(self, obj: GithubObject) -> None: ...