Always call freeze_support() if sys.frozen is True (#3275)

diff --git a/CHANGES.md b/CHANGES.md
index a775c76e4a5871aa58fb335d361e9a03df5a6e06..6fb099040b304c94bac93a75288951d432e2e622 100644 (file)
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -31,6 +31,9 @@
 
 <!-- Changes to how Black is packaged, such as dependency requirements -->
 
+- Executables made with PyInstaller will no longer crash when formatting several files
+  at once on macOS. Native x86-64 executables for macOS are available once again.
+  (#3275)
 - Hatchling is now used as the build backend. This will not have any effect for users
   who install Black with its wheels from PyPI. (#3233)
 - Faster compiled wheels are now available for CPython 3.11 (#3276)

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()