Skip pypm when midi is disabled or portmidi is missing - #3965
Skip pypm when midi is disabled or portmidi is missing#3965MrMusAddict wants to merge 3 commits into
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Included review availability: Your plan provides up to 4 included reviews per hour; 3 remain after this review. 📝 WalkthroughWalkthroughThe build now gates Portmidi detection on the ChangesPortmidi MIDI availability
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: ⚪ Minimal · up to MIDI-disabled or PortMidi-unavailable builds now omit MIDI support cleanly and report a clear error if pygame.midi is imported. No merge-blocking risk remains. Suggested reviewers: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Actionable comments posted: 1
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Inline comments:
In `@meson.build`:
- Around line 458-459: Update the Meson MIDI configuration around portmidi_dep
and the src_py midi.py installation so pygame.midi is installed only when pypm
is available. Either make midi=enabled fail when PortMidi cannot be found, or
conditionally omit midi.py for optional Emscripten MIDI; preserve installation
when the dependency is present.
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meson.build
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| # pygame.midi imports the pypm extension, so only install it when pypm is built | ||
| if portmidi_dep.found() | ||
| py.install_sources('midi.py', subdir: pg) | ||
| endif |
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This change will cause import pygame.midi to raise an ImportError/ModuleNotFound error with a generic error message.
I suppose an alternative here is to have some error handling in midi.py that does a try-except while importing midi, and on failure raises a better error message?
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I agree a try-except makes sense. I see something similar in camera.py. I'll push something here shortly. I'll revert 115db3e and edit midi.py
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LGTM, thanks for contributing to pygame-ce! 🎉
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The midi feature's not gating pypm currently. When pkg-config doesn't see portmidi,
cc.find_library(..., required: get_option('midi'))gets wrapped indeclare_dependency(). This always declares it found, including-Dmidi=disabled, but also-Dmidi=autowhich impacts Android.The fix starts with a "not found" state, skips the lookup when midi is disabled, and declares the dependency when
find_libraryactually does.Tested in WSL and installed portmidi. "disabled" now correctly skips building a pypm target, and enabled/auto still successfully build.
dev.py buildanddev.py teston this branch match main on my machine (same 4 pre-existing WavPack mixer errors, nothing new). A-Dmidi=disabledbuild imports fine andpygame.midiis absent. No new unit tests since this is meson build config.Relevant for Android: disabled/auto now skip pypm and successfully builds a wheel, and
-Dmidi=enabledcorrectly still errors.AI disclosure: the meson.build diff itself was discovered by Fable 5.1, working from my android build experiments and my understanding of why
-Dmidi=disabledwasn't taking effect. I reviewed it line by line and no changes were necessary. Testing / sanity check was done by me, and for completeness Fable 5.1 ran its own sweep. Everything came back clean.