--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mercurial/cext/osutil.pyi	Sat Nov 07 16:28:30 2020 -0800
@@ -0,0 +1,26 @@
+from typing import (
+    AnyStr,
+    IO,
+    List,
+    Sequence,
+)
+
+version: int
+
+class stat:
+    st_dev: int
+    st_mode: int
+    st_nlink: int
+    st_size: int
+    st_mtime: int
+    st_ctime: int
+
+def listdir(path: bytes, st: bool, skip: bool) -> List[stat]: ...
+def posixfile(name: AnyStr, mode: bytes, buffering: int) -> IO: ...
+def statfiles(names: Sequence[bytes]) -> List[stat]: ...
+def recvfds(sockfd: int) -> List[int]: ...
+def setprocname(name: bytes) -> None: ...
+def getfstype(path: bytes) -> bytes: ...
+def getfsmountpoint(path: bytes) -> bytes: ...
+def unblocksignal(sig: int) -> None: ...
+def isgui() -> bool: ...