ci: run tests against Python 3.14 #828
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ahal
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Do you know how we end up with forkserver here? taskgraph/src/taskgraph/generator.py Line 313 in e8283fe |
Ah, I didn't realize we were doing that. This is the parallelization that happens when you pass in multiple parameters files, so different context. Do you think we should avoid forkserver there as well? I guess we're currently using fork based subprocesses within forkserver based subprocesses on Python 3.14 |
Oh, right, of course.
Hmm, probably not. What you're doing here probably makes more sense than sticking with fork in that case. |
Python 3.14 switched multiprocessing to use the "forkserver" start method. This means the forked subprocess don't inherit the parent process' memory and the monkeypatched functions (via the `run_taskgraph` fixture) were no longer applied. This works around the issue by actually creating bad parameter files to avoid monkeypatching.
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