fix error with Python 3.14 on Linux#37
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tridge merged 1 commit intodronecan:masterfrom Jan 12, 2026
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Python 3.14 switches to multiprocessing start method `forkserver` on Linux, which our code is broken with due to changes in Python 3.13 and our bad habit of running code in the main module. This causes our compile/test subprocesses to die, saying `dronecan_dsdlc.py: error: the following arguments are required: namespace_dir` and ultimately failing with `ConnectionResetError: [Errno 104] Connection reset by peer`. Fix by switching back to the old default of `fork` if we are going to use the broken `forkserver`. Our code needs to be fixed in the future to not do so much in the main module as `fork` is not the recommened method, though we probably do not fall afoul of its flaws.
tridge
approved these changes
Jan 12, 2026
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Python 3.14 switches to multiprocessing start method
forkserveron Linux, which our code is broken with due to changes in Python 3.13 and our bad habit of running code in the main module.This causes our compile/test subprocesses to die, saying
dronecan_dsdlc.py: error: the following arguments are required: namespace_dirand ultimately failing withConnectionResetError: [Errno 104] Connection reset by peer.Fix by switching back to the old default of
forkif we are going to use the brokenforkserver. Our code needs to be fixed in the future to not do so much in the main module asforkis not the recommened method, though we probably do not fall afoul of its flaws.Tested on Linux with Python 3.14, 3.13, and 3.12 that AP compiles after this fix, where previously it did not on 3.14. Also confirmed compilation result is the same.