Pass item type to ListStore

Requires https://gitlab.gnome.org/GNOME/pygobject/-/merge_requests/237

src/operations/ensure_coauthors.py

@@ -19,8 +19,7 @@ def get_coauthors(commit_message: str) -> list[str]:
 
 
 def get_missing_coauthors(
-    # Should be Gio.ListStore[PackageUpdate] but pygobject does not implement Generic.
-    updates: Gio.ListStore,
+    updates: Gio.ListStore[PackageUpdate],
 ) -> Generator[tuple[Ggit.Commit, set[str]], None, None]:
     for update in updates:
         authors: set[str] = set()

src/package_update.py

@@ -92,6 +92,8 @@ class PackageUpdate(GObject.Object):
     editing_stack_page = GObject.Property(type=str, default="not-editing")
     final_commit_message_rich = GObject.Property(type=str)
 
+    _commits: Gio.ListStore[CommitInfo]
+
     def __init__(self, subject: str, commits: list[Ggit.Commit], **kwargs):
         super().__init__(**kwargs)
         self._subject = subject
@@ -188,6 +190,6 @@ def changes_reviewed(self):
     def changes_reviewed(self, changes_reviewed):  # type: ignore[no-redef]
         self._changes_reviewed = changes_reviewed
 
-    @GObject.Property(type=Gio.ListStore)
+    @GObject.Property(type=Gio.ListStore[CommitInfo])
     def commits(self):
         return self._commits

src/package_update.pyi

@@ -18,5 +18,5 @@ class PackageUpdate(GObject.Object):
         final_commit_message: str
         changelog_link: str
         changes_reviewed: bool
-        commits: Gio.ListStore
+        commits: Gio.ListStore[CommitInfo]
     props: Props = ...

src/window.py

@@ -149,7 +149,7 @@ class NonemastWindow(Adw.ApplicationWindow):
     # Mapping between updates’ commit subjects and their indices in updates_store.
     _updates_subject_indices: dict[str, int] = {}
 
-    updates = GObject.Property(type=Gio.ListStore)
+    updates = GObject.Property(type=Gio.ListStore[PackageUpdate])
     updates_search_filter = Gtk.Template.Child()
 
     details_stack = Gtk.Template.Child()

src/window.pyi

@@ -11,5 +11,5 @@ class UpdateDetails(Gtk.Box):
 
 class NonemastWindow(Adw.ApplicationWindow):
     class Props(Adw.ApplicationWindow.Props):
-        updates: Gio.ListStore
+        updates: Gio.ListStore[PackageUpdate]
     props: Props = ...