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Add workaround for python3.11 #46

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Merged
Shimuuar merged 1 commit into from
Aug 23, 2026
Merged

Add workaround for python3.11 #46

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11 changes: 11 additions & 0 deletions src/Python/Internal/Eval.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -439,6 +439,17 @@ doInitializePythonIO = do
goto error;
};
PyConfig_Clear(&cfg);
// This is hack for python<=3.11.
//
// Somehow we may end up in stet where thread ID of main thread is not equal
// to main thread's one. Importing threading seems to fix it. However exact
// reason for such behavior is unknown
if( PY_MINOR_VERSION <= 11 ) {
PyObject *threading = PyImport_ImportModule("threading");
if( PyErr_Occurred() ) {
PyErr_Clear();
}
}
// Release GIL so other threads may take it
PyEval_SaveThread();
return 0;
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