Flaky test `tests.test_mpv.RegressionTests.test_wait_for_property_concurrency` in Python3.12

[baldurmen]

trafficstars

Hi,

It seems the tests.test_mpv.RegressionTests.test_wait_for_property_concurrency is flaky with Python3.12, using libmpv 0.38.0.

I have to run the testsuite a couple of times to trigger the issue, but once it a while, it'll fail with:

======================================================================
ERROR: test_wait_for_property_concurrency (tests.test_mpv.RegressionTests.test_wait_for_property_concurrency)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/<<PKGBUILDDIR>>/.pybuild/cpython3_3.12_python-mpv/build/tests/test_mpv.py", line 928, in test_wait_for_property_concurrency
    player.seek(0, reference='absolute', precision='exact')
  File "/<<PKGBUILDDIR>>/.pybuild/cpython3_3.12_python-mpv/build/mpv.py", line 1244, in seek
    self.command('seek', amount, reference, precision)
  File "/<<PKGBUILDDIR>>/.pybuild/cpython3_3.12_python-mpv/build/mpv.py", line 1237, in command
    _mpv_command_node(self.handle, ppointer, out)
  File "/<<PKGBUILDDIR>>/.pybuild/cpython3_3.12_python-mpv/build/mpv.py", line 142, in raise_for_ec
    raise ex
SystemError: ('Error running mpv command', -12, (<MpvHandle object at 0x7f75f918bdd0>, <mpv.LP_MpvNode object at 0x7f75f934b550>, <mpv.LP_MpvNode object at 0x7f75f9348250>))

A complete build log can be found here: https://people.debian.org/~sanvila/build-logs/202407/python-mpv_1.0.7-1_amd64-20240723T142304.770Z