qmk/lib
Sergey Vlasov 7e27d72cbc
Fix qmk find failure due to circular imports (#22523)
There was an import cycle in the Python modules:

  - `qmk.build_targets` imported `qmk.cli.generate.compilation_database`;
  - importing `qmk.cli.generate.compilation_database` requires
    initializing `qmk.cli` first;
  - the initialization of `qmk.cli` imported the modules for all CLI
    commands;
  - `qmk.cli.compile` imported `qmk.build_targets`.

This cycle did not matter in most cases, because `qmk.cli` was imported
first, and in that case importing `qmk.cli.generate.compilation_database`
did not trigger the initialization of `qmk.cli` again.  However, there was
one corner case when `qmk.bulld_targets` was getting imported first:

  - The `qmk find` command uses the `multiprocessing` module.
  - The `multiprocessing` module uses the `spawn` start method on macOS
    and Windows.
  - When the `spawn` method is used, the child processes initialize
    without any Python modules loaded, and the required modules are loaded
    on demand by the `pickle` module when receiving the serialized objects
    from the main process.

The result was that the `qmk find` command did not work properly on macOS
(and probably Windows too); it reported exceptions like this:

    ImportError: cannot import name 'KeyboardKeymapBuildTarget' from partially initialized module 'qmk.build_targets' (most likely due to a circular import)

Moving the offending `qmk.cli.generate.compilation_database` import into
the method which actually uses it fixes the problem.
2023-11-21 15:05:29 +00:00
..
arm_atsam/packs
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chibios-contrib@da78eb3759 [Core] Update ChibiOS-Contrib (#21553) 2023-07-17 19:55:31 +10:00
fnv
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printf@c2e3b4e10d
python Fix qmk find failure due to circular imports (#22523) 2023-11-21 15:05:29 +00:00
usbhost
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