Enable build isolation under CIWB (#3297)

[etc/vim.git] / src / black / __init__.py

diff --git a/src/black/__init__.py b/src/black/__init__.py
index ded4a7368228949c1ec43448c7fc241e0604f10b..5b8c9749119c233d48ee817e10f3ffe33c8486fe 100644 (file)
--- a/src/black/__init__.py
+++ b/src/black/__init__.py
@@ -1375,7 +1375,9 @@ def patch_click() -> None:
 
 
 def patched_main() -> None:
-    if sys.platform == "win32" and getattr(sys, "frozen", False):
+    # PyInstaller patches multiprocessing to need freeze_support() even in non-Windows
+    # environments so just assume we always need to call it if frozen.
+    if getattr(sys, "frozen", False):
         from multiprocessing import freeze_support
 
         freeze_support()