^stu had some great comments above, especially som...
# developmenta
aloof-angle-91616
09/27/2020, 9:58 PM^stu had some great comments above, especially some very very interesting remarks on the mypy caching ticket: https://github.com/pantsbuild/pants/issues/10864#issuecomment-699689828. i'm putting the doc on hold for a bit until i can answer the questions raised, and i will take a look into
brfsw
witty-crayon-22786
09/27/2020, 10:13 PMYea, the brfs angle is maybe a thing...1) It would allow the input paths to all be stable, 2) could fake all the timestamps to something stable
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witty-crayon-22786
09/27/2020, 10:13 PMIt might look like an atomic swap below the running process, and then re-run.
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aloof-angle-91616
09/27/2020, 10:13 PMah omg yes
aloof-angle-91616
09/27/2020, 10:14 PMdidn't think about metadata like timestamps but that would cover even such ridiculous caches as the intellij cache
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witty-crayon-22786
09/27/2020, 10:14 PMThe only thing is, FUSE does not send file watching events on Linux (it does on OSX), so I'm not sure that that strategy would work for mypy's daemon
witty-crayon-22786
09/27/2020, 10:15 PMIntelliJ might have an issue with that too
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aloof-angle-91616
09/27/2020, 10:16 PMi'm also under the impression that the FUSE driver itself is something we can hack on. i suppose in linux that would literally have to involve a PR to the kernel so will have to balance that with expected benefit. i will review the different FUSE capabilities across systems since all of that was news to me
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