fix-macos-forkserver #1557
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fix-macos-forkserver #1557
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Fix
BrokenProcessPoolerror on macOS by usingforkservermethodFixes #1256
Problem
nbdev_testfails on macOS withBrokenProcessPoolerror due to Objective-C runtime fork-safety issues. Current workarounds require setting environment variables or using--n_workers 0.Solution
Use
forkservermultiprocessing method on macOS when running outside notebooks. This avoids fork-safety issues by forking from a clean server process before problematic libraries are loaded.Changes
nbdev_testto use{'method':'forkserver'}on macOS (sys.platform=='darwin') when not in notebooks