tree 68d528b3b9b4898fe43337f7fed26a67f8540a6b
parent 41204fc7ebb26731c39600a0c0f1a9e5830e5812
author Chandan Singh <chandan@chandansingh.net> 1598306010 +0100
committer Chandan Singh <chandan@chandansingh.net> 1598306010 +0100

Force multiprocessing method to be fork if available

Since Python 3.8, the multiprocessing module defaults to the spawn
method on MacOS, since the fork method is considered unsafe.

However, BuildStream is not compatible with spawn mode so we
force the default to fork (if available) which works for the most part.

See
https://lists.apache.org/thread.html/r08edd3dd10ce3039da5eb01f0722d25c44406ab8afadcc3ae78a5414%40%3Cdev.buildstream.apache.org%3E
for some related discussion.