Lul, fix everything for cluster helper

tractor/_clustering.py

@@ -17,7 +17,10 @@ async def open_actor_cluster(
     count: int = cpu_count(),
     names: Optional[list[str]] = None,
 
-) -> AsyncGenerator[..., dict[str, tractor.Portal]]:
+) -> AsyncGenerator[
+    list[str],
+    dict[str, tractor.Portal]
+]:
 
     portals: dict[str, tractor.Portal] = {}
     uid = tractor.current_actor().uid
@@ -30,10 +33,8 @@ async def open_actor_cluster(
         raise ValueError(
             'Number of names is {len(names)} but count it {count}')
 
-    async with (
-        tractor.open_nursery() as an,
-        trio.open_nursery() as n,
-    ):
+    async with tractor.open_nursery() as an:
+        async with trio.open_nursery() as n:
             for index, key in zip(range(count), names):
 
                 async def start(i) -> None: