X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/f2ea461e9e9fa5c47bb61fd72d512c748928badc..355a6b34b3a61b6729e469115e1393d9779963c5:/src/black/concurrency.py

diff --git a/src/black/concurrency.py b/src/black/concurrency.py
index 119a9a7..69d79f5 100644
--- a/src/black/concurrency.py
+++ b/src/black/concurrency.py
@@ -6,6 +6,21 @@ from typing import Any, Iterable
 from black.output import err
 
 
+def maybe_install_uvloop() -> None:
+    """If our environment has uvloop installed we use it.
+
+    This is called only from command-line entry points to avoid
+    interfering with the parent process if Black is used as a library.
+
+    """
+    try:
+        import uvloop
+
+        uvloop.install()
+    except ImportError:
+        pass
+
+
 def cancel(tasks: Iterable["asyncio.Task[Any]"]) -> None:
     """asyncio signal handler that cancels all `tasks` and reports to stderr."""
     err("Aborted!")