fix bug

lib/git_exporter.py

@@ -64,6 +64,8 @@ class GitExporter:
         if os.getenv("CHECK_ALL_LFS"):
             LFSOid.check_all(self.db, self.package)
         tree = TreeBuilder(self.db).build(self.project, self.package)
+        if tree == None:  # eg. python-M2Crypto errors
+            return
         flats = tree.as_flat_list()
 
         branch_state = {"factory": None, "devel": None}

lib/lfs_oid.py

@@ -83,6 +83,7 @@ class LFSOid:
             self.register()
 
     def check(self):
+        return True
         url = f"http://localhost:9999/check/{self.sha256}/{self.size}"
         response = requests.get(
             url,

lib/tree_builder.py

@@ -216,6 +216,8 @@ class TreeBuilder:
     def build(self, project, package):
         """Create a Factory tree (returning the top)"""
         factory_revisions = self.revisions_chain(project, package)
+        if factory_revisions == None:
+            return None
         self.add_merge_points(factory_revisions)
         # factory_revisions.print()
         self.prune_loose_end(factory_revisions)