PyQt6/PySide6 on Linux: AttributeError: type object 'PySide6.QtGui.QPalette' has no attribute 'Background'

[doronbehar]

Hello, I'm trying to package this library for NixOS, along with the other packages you develop (NixOS/nixpkgs#327446), and I'm experiencing this peculiar test failure with PyQt6:

Running phase: pythonImportsCheckPhase
@nix { "action": "setPhase", "phase": "pythonImportsCheckPhase" }
Executing pythonImportsCheckPhase
Check whether the following modules can be imported: guidata
Running phase: pytestCheckPhase
@nix { "action": "setPhase", "phase": "pytestCheckPhase" }
Executing pytestCheckPhase
============================= test session starts ==============================
platform linux -- Python 3.12.5, pytest-8.3.2, pluggy-1.5.0
guidata 3.6.2, PyQt6 6.7.0.dev2404081550 [Qt version: 6.7.2]
rootdir: /build/source
configfile: pyproject.toml
collected 40 items                                                             

guidata/tests/dataset/test_activable_dataset.py .                        [  2%]
guidata/tests/dataset/test_activable_items.py .                          [  5%]
guidata/tests/dataset/test_all_features.py .                             [  7%]
guidata/tests/dataset/test_all_items.py .                                [ 10%]
guidata/tests/dataset/test_all_items_readonly.py .                       [ 12%]
guidata/tests/dataset/test_bool_selector.py .                            [ 15%]
guidata/tests/dataset/test_callbacks.py .                                [ 17%]
guidata/tests/dataset/test_datasetgroup.py .                             [ 20%]
guidata/tests/dataset/test_editgroupbox.py .                             [ 22%]
guidata/tests/dataset/test_inheritance.py .                              [ 25%]
guidata/tests/dataset/test_item_order.py .                               [ 27%]
guidata/tests/dataset/test_loadsave_hdf5.py .                            [ 30%]
guidata/tests/dataset/test_loadsave_json.py .                            [ 32%]
guidata/tests/dataset/test_rotatedlabel.py .                             [ 35%]
guidata/tests/unit/test_config.py ...                                    [ 42%]
guidata/tests/unit/test_data.py ...                                      [ 50%]
guidata/tests/unit/test_dataset_from_dict.py .                           [ 52%]
guidata/tests/unit/test_dataset_from_func.py .                           [ 55%]
guidata/tests/unit/test_genreqs.py .s                                    [ 60%]
guidata/tests/unit/test_h5fmt.py .                                       [ 62%]
guidata/tests/unit/test_jsonfmt.py .                                     [ 65%]
guidata/tests/unit/test_no_qt.py .                                       [ 67%]
guidata/tests/unit/test_text.py s                                        [ 70%]
guidata/tests/unit/test_translations.py .                                [ 72%]
guidata/tests/unit/test_updaterestoredataset.py .                        [ 75%]
guidata/tests/unit/test_userconfig_app.py .                              [ 77%]
guidata/tests/widgets/test_arrayeditor.py .                              [ 80%]
guidata/tests/widgets/test_arrayeditor_unit.py .                         [ 82%]
guidata/tests/widgets/test_codeeditor.py .                               [ 85%]
guidata/tests/widgets/test_collectionseditor.py .                        [ 87%]
guidata/tests/widgets/test_console.py F                                  [ 90%]
guidata/tests/widgets/test_dataframeeditor.py s                          [ 92%]
guidata/tests/widgets/test_importwizard.py Fatal Python error: Aborted

Current thread 0x00007ffff7f90740 (most recent call first):
  File "/build/source/guidata/qthelpers.py", line 625 in close_widgets_and_quit
  File "/build/source/guidata/qthelpers.py", line 686 in <lambda>
  File "/build/source/guidata/qthelpers.py", line 710 in exec_dialog
  File "/build/source/guidata/tests/widgets/test_importwizard.py", line 30 in test_importwizard
  File "/nix/store/7p6gx66zzh7gk0094rxis9k5sli95yzf-python3.12-pytest-8.3.2/lib/python3.12/site-packages/_pytest/python.py", line 159 in pytest_pyfunc_call
  File "/nix/store/xrlajzmcwarm0rhim9kdjbf50sw2pfas-python3.12-pluggy-1.5.0/lib/python3.12/site-packages/pluggy/_callers.py", line 103 in _multicall
  File "/nix/store/xrlajzmcwarm0rhim9kdjbf50sw2pfas-python3.12-pluggy-1.5.0/lib/python3.12/site-packages/pluggy/_manager.py", line 120 in _hookexec
  File "/nix/store/xrlajzmcwarm0rhim9kdjbf50sw2pfas-python3.12-pluggy-1.5.0/lib/python3.12/site-packages/pluggy/_hooks.py", line 513 in __call__
  File "/nix/store/7p6gx66zzh7gk0094rxis9k5sli95yzf-python3.12-pytest-8.3.2/lib/python3.12/site-packages/_pytest/python.py", line 1627 in runtest
  File "/nix/store/7p6gx66zzh7gk0094rxis9k5sli95yzf-python3.12-pytest-8.3.2/lib/python3.12/site-packages/_pytest/runner.py", line 174 in pytest_runtest_call
  File "/nix/store/xrlajzmcwarm0rhim9kdjbf50sw2pfas-python3.12-pluggy-1.5.0/lib/python3.12/site-packages/pluggy/_callers.py", line 103 in _multicall
  File "/nix/store/xrlajzmcwarm0rhim9kdjbf50sw2pfas-python3.12-pluggy-1.5.0/lib/python3.12/site-packages/pluggy/_manager.py", line 120 in _hookexec
  File "/nix/store/xrlajzmcwarm0rhim9kdjbf50sw2pfas-python3.12-pluggy-1.5.0/lib/python3.12/site-packages/pluggy/_hooks.py", line 513 in __call__
  File "/nix/store/7p6gx66zzh7gk0094rxis9k5sli95yzf-python3.12-pytest-8.3.2/lib/python3.12/site-packages/_pytest/runner.py", line 242 in <lambda>
  File "/nix/store/7p6gx66zzh7gk0094rxis9k5sli95yzf-python3.12-pytest-8.3.2/lib/python3.12/site-packages/_pytest/runner.py", line 341 in from_call
  File "/nix/store/7p6gx66zzh7gk0094rxis9k5sli95yzf-python3.12-pytest-8.3.2/lib/python3.12/site-packages/_pytest/runner.py", line 241 in call_and_report
  File "/nix/store/7p6gx66zzh7gk0094rxis9k5sli95yzf-python3.12-pytest-8.3.2/lib/python3.12/site-packages/_pytest/runner.py", line 132 in runtestprotocol
  File "/nix/store/7p6gx66zzh7gk0094rxis9k5sli95yzf-python3.12-pytest-8.3.2/lib/python3.12/site-packages/_pytest/runner.py", line 113 in pytest_runtest_protocol
  File "/nix/store/xrlajzmcwarm0rhim9kdjbf50sw2pfas-python3.12-pluggy-1.5.0/lib/python3.12/site-packages/pluggy/_callers.py", line 103 in _multicall
  File "/nix/store/xrlajzmcwarm0rhim9kdjbf50sw2pfas-python3.12-pluggy-1.5.0/lib/python3.12/site-packages/pluggy/_manager.py", line 120 in _hookexec
  File "/nix/store/xrlajzmcwarm0rhim9kdjbf50sw2pfas-python3.12-pluggy-1.5.0/lib/python3.12/site-packages/pluggy/_hooks.py", line 513 in __call__
  File "/nix/store/7p6gx66zzh7gk0094rxis9k5sli95yzf-python3.12-pytest-8.3.2/lib/python3.12/site-packages/_pytest/main.py", line 362 in pytest_runtestloop
  File "/nix/store/xrlajzmcwarm0rhim9kdjbf50sw2pfas-python3.12-pluggy-1.5.0/lib/python3.12/site-packages/pluggy/_callers.py", line 103 in _multicall
  File "/nix/store/xrlajzmcwarm0rhim9kdjbf50sw2pfas-python3.12-pluggy-1.5.0/lib/python3.12/site-packages/pluggy/_manager.py", line 120 in _hookexec
  File "/nix/store/xrlajzmcwarm0rhim9kdjbf50sw2pfas-python3.12-pluggy-1.5.0/lib/python3.12/site-packages/pluggy/_hooks.py", line 513 in __call__
  File "/nix/store/7p6gx66zzh7gk0094rxis9k5sli95yzf-python3.12-pytest-8.3.2/lib/python3.12/site-packages/_pytest/main.py", line 337 in _main
  File "/nix/store/7p6gx66zzh7gk0094rxis9k5sli95yzf-python3.12-pytest-8.3.2/lib/python3.12/site-packages/_pytest/main.py", line 283 in wrap_session
  File "/nix/store/7p6gx66zzh7gk0094rxis9k5sli95yzf-python3.12-pytest-8.3.2/lib/python3.12/site-packages/_pytest/main.py", line 330 in pytest_cmdline_main
  File "/nix/store/xrlajzmcwarm0rhim9kdjbf50sw2pfas-python3.12-pluggy-1.5.0/lib/python3.12/site-packages/pluggy/_callers.py", line 103 in _multicall
  File "/nix/store/xrlajzmcwarm0rhim9kdjbf50sw2pfas-python3.12-pluggy-1.5.0/lib/python3.12/site-packages/pluggy/_manager.py", line 120 in _hookexec
  File "/nix/store/xrlajzmcwarm0rhim9kdjbf50sw2pfas-python3.12-pluggy-1.5.0/lib/python3.12/site-packages/pluggy/_hooks.py", line 513 in __call__
  File "/nix/store/7p6gx66zzh7gk0094rxis9k5sli95yzf-python3.12-pytest-8.3.2/lib/python3.12/site-packages/_pytest/config/__init__.py", line 175 in main
  File "/nix/store/7p6gx66zzh7gk0094rxis9k5sli95yzf-python3.12-pytest-8.3.2/lib/python3.12/site-packages/_pytest/config/__init__.py", line 201 in console_main
  File "/nix/store/7p6gx66zzh7gk0094rxis9k5sli95yzf-python3.12-pytest-8.3.2/lib/python3.12/site-packages/pytest/__main__.py", line 9 in <module>
  File "<frozen runpy>", line 88 in _run_code
  File "<frozen runpy>", line 198 in _run_module_as_main

Extension modules: PyQt6.QtCore, numpy.core._multiarray_umath, numpy.core._multiarray_tests, numpy.linalg._umath_linalg, numpy.fft._pocketfft_internal, numpy.random._common, numpy.random.bit_generator, numpy.random._bounded_integers, numpy.random._mt19937, numpy.random.mtrand, numpy.random._philox, numpy.random._pcg64, numpy.random._sfc64, numpy.random._generator, h5py._errors, h5py.defs, h5py._objects, h5py.h5, h5py.utils, h5py.h5t, h5py.h5s, h5py.h5ac, h5py.h5p, h5py.h5r, h5py._proxy, h5py._conv, h5py.h5z, h5py.h5a, h5py.h5d, h5py.h5ds, h5py.h5g, h5py.h5i, h5py.h5f, h5py.h5fd, h5py.h5pl, h5py.h5o, h5py.h5l, h5py._selector, PyQt6.QtGui, PyQt6.QtOpenGL, PyQt6.QtWidgets, PyQt6.QtOpenGLWidgets, _cffi_backend (total: 43)
/nix/store/j9q99fln05lr27zf08p2hd73410mfr2i-pytest-check-hook/nix-support/setup-hook: line 53:   556 Aborted                 (core dumped) /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/bin/python3.12 -m pytest

Any idea why is that? Here's the backtrace:

#0  0x00007f9e08e9b7dc in __pthread_kill_implementation () from /nix/store/wlffq5p6mxxgfap10sav3ij936jzqm59-glibc-2.39-52/lib/libc.so.6
#1  0x00007f9e08e49516 in raise () from /nix/store/wlffq5p6mxxgfap10sav3ij936jzqm59-glibc-2.39-52/lib/libc.so.6
#2  <signal handler called>
#3  0x00007f9e08e9b7dc in __pthread_kill_implementation () from /nix/store/wlffq5p6mxxgfap10sav3ij936jzqm59-glibc-2.39-52/lib/libc.so.6
#4  0x00007f9e08e49516 in raise () from /nix/store/wlffq5p6mxxgfap10sav3ij936jzqm59-glibc-2.39-52/lib/libc.so.6
#5  0x00007f9e08e31935 in abort () from /nix/store/wlffq5p6mxxgfap10sav3ij936jzqm59-glibc-2.39-52/lib/libc.so.6
#6  0x00007f9df9cc2cac in qAbort() () from /nix/store/w85jx4jpagicbhv0fcqrjykxkynjrg4h-qtbase-6.7.2/lib/libQt6Core.so.6
#7  0x00007f9df9d0c7b6 in qt_message(QtMsgType, QMessageLogContext const&, char const*, __va_list_tag*) () from /nix/store/w85jx4jpagicbhv0fcqrjykxkynjrg4h-qtbase-6.7.2/lib/libQt6Core.so.6
#8  0x00007f9df9cc3b39 in QMessageLogger::fatal(char const*, ...) const () from /nix/store/w85jx4jpagicbhv0fcqrjykxkynjrg4h-qtbase-6.7.2/lib/libQt6Core.so.6
#9  0x00007f9db2b332fc in init_platform(QString const&, QString const&, QString const&, int&, char**) [clone .cold] () from /nix/store/w85jx4jpagicbhv0fcqrjykxkynjrg4h-qtbase-6.7.2/lib/libQt6Gui.so.6
#10 0x00007f9db2bd3162 in QGuiApplicationPrivate::createPlatformIntegration() () from /nix/store/w85jx4jpagicbhv0fcqrjykxkynjrg4h-qtbase-6.7.2/lib/libQt6Gui.so.6
#11 0x00007f9db2bd3c38 in QGuiApplicationPrivate::createEventDispatcher() () from /nix/store/w85jx4jpagicbhv0fcqrjykxkynjrg4h-qtbase-6.7.2/lib/libQt6Gui.so.6
#12 0x00007f9df9d8e14d in QCoreApplicationPrivate::init() () from /nix/store/w85jx4jpagicbhv0fcqrjykxkynjrg4h-qtbase-6.7.2/lib/libQt6Core.so.6
#13 0x00007f9db2bd78ec in QGuiApplicationPrivate::init() () from /nix/store/w85jx4jpagicbhv0fcqrjykxkynjrg4h-qtbase-6.7.2/lib/libQt6Gui.so.6
#14 0x00007f9db139afd9 in QApplicationPrivate::init() () from /nix/store/w85jx4jpagicbhv0fcqrjykxkynjrg4h-qtbase-6.7.2/lib/libQt6Widgets.so.6
#15 0x00007f9db1daa729 in sipQApplication::sipQApplication(int&, char**, int) () from /nix/store/y269rlvzgn939jhww2qjc4769v85r9b0-python3-3.12.5-env/lib/python3.12/site-packages/PyQt6/QtWidgets.abi3.so
#16 0x00007f9db1daa817 in init_type_QApplication () from /nix/store/y269rlvzgn939jhww2qjc4769v85r9b0-python3-3.12.5-env/lib/python3.12/site-packages/PyQt6/QtWidgets.abi3.so
#17 0x00007f9df9a88266 in sipSimpleWrapper_init () from /nix/store/y269rlvzgn939jhww2qjc4769v85r9b0-python3-3.12.5-env/lib/python3.12/site-packages/PyQt6/sip.cpython-312-x86_64-linux-gnu.so
#18 0x00007f9e0918b137 in type_call () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#19 0x00007f9e09211d31 in _PyObject_MakeTpCall () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#20 0x00007f9e0910bbb5 in _PyEval_EvalFrameDefault () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#21 0x00007f9e0936b7dd in gen_iternext () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#22 0x00007f9e092d07a3 in builtin_next () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#23 0x00007f9e0910e77c in _PyEval_EvalFrameDefault () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#24 0x00007f9e09346d73 in method_vectorcall () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#25 0x00007f9e092128c4 in _PyObject_VectorcallTstate.lto_priv.26 () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#26 0x00007f9e0910df77 in _PyEval_EvalFrameDefault () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#27 0x00007f9e09211fe1 in _PyObject_FastCallDictTstate () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#28 0x00007f9e092124c7 in slot_tp_call () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#29 0x00007f9e09211d31 in _PyObject_MakeTpCall () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#30 0x00007f9e0910bbb5 in _PyEval_EvalFrameDefault () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#31 0x00007f9e09211fe1 in _PyObject_FastCallDictTstate () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#32 0x00007f9e092124c7 in slot_tp_call () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#33 0x00007f9e091c51ac in _PyObject_Call () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#34 0x00007f9e09105a1b in _PyEval_EvalFrameDefault () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#35 0x00007f9e09211fe1 in _PyObject_FastCallDictTstate () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#36 0x00007f9e092124c7 in slot_tp_call () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#37 0x00007f9e09211d31 in _PyObject_MakeTpCall () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#38 0x00007f9e0910bbb5 in _PyEval_EvalFrameDefault () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#39 0x00007f9e09211fe1 in _PyObject_FastCallDictTstate () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#40 0x00007f9e092124c7 in slot_tp_call () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#41 0x00007f9e09211d31 in _PyObject_MakeTpCall () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#42 0x00007f9e0910bbb5 in _PyEval_EvalFrameDefault () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#43 0x00007f9e09211fe1 in _PyObject_FastCallDictTstate () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#44 0x00007f9e092124c7 in slot_tp_call () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#45 0x00007f9e09211d31 in _PyObject_MakeTpCall () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#46 0x00007f9e0910bbb5 in _PyEval_EvalFrameDefault () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#47 0x00007f9e0936574d in PyEval_EvalCode () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#48 0x00007f9e09369d10 in run_eval_code_obj () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#49 0x00007f9e093c793d in run_mod () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#50 0x00007f9e09400bb5 in _PyRun_SimpleFileObject () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#51 0x00007f9e09401911 in _PyRun_AnyFileObject () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#52 0x00007f9e09407f7a in Py_RunMain () from /nix/store/pgb120fb7srbh418v4i2a70aq1w9dawd-python3-3.12.5/lib/libpython3.12.so.1.0
#53 0x00007f9e08e3314e in __libc_start_call_main () from /nix/store/wlffq5p6mxxgfap10sav3ij936jzqm59-glibc-2.39-52/lib/libc.so.6
#54 0x00007f9e08e33209 in __libc_start_main_impl () from /nix/store/wlffq5p6mxxgfap10sav3ij936jzqm59-glibc-2.39-52/lib/libc.so.6
#55 0x0000000000401075 in _start ()

With PySide6, I get:

============================= test session starts ==============================
platform linux -- Python 3.12.5, pytest-8.3.2, pluggy-1.5.0
guidata 3.6.2, PySide6 6.7.2 [Qt version: 6.7.2]
rootdir: /build/source
configfile: pyproject.toml
collected 40 items                                                             

guidata/tests/dataset/test_activable_dataset.py .                        [  2%]
guidata/tests/dataset/test_activable_items.py .                          [  5%]
guidata/tests/dataset/test_all_features.py .                             [  7%]
guidata/tests/dataset/test_all_items.py .                                [ 10%]
guidata/tests/dataset/test_all_items_readonly.py .                       [ 12%]
guidata/tests/dataset/test_bool_selector.py .                            [ 15%]
guidata/tests/dataset/test_callbacks.py .                                [ 17%]
guidata/tests/dataset/test_datasetgroup.py .                             [ 20%]
guidata/tests/dataset/test_editgroupbox.py .                             [ 22%]
guidata/tests/dataset/test_inheritance.py .                              [ 25%]
guidata/tests/dataset/test_item_order.py .                               [ 27%]
guidata/tests/dataset/test_loadsave_hdf5.py .                            [ 30%]
guidata/tests/dataset/test_loadsave_json.py .                            [ 32%]
guidata/tests/dataset/test_rotatedlabel.py .                             [ 35%]
guidata/tests/unit/test_config.py ...                                    [ 42%]
guidata/tests/unit/test_data.py ...                                      [ 50%]
guidata/tests/unit/test_dataset_from_dict.py .                           [ 52%]
guidata/tests/unit/test_dataset_from_func.py .                           [ 55%]
guidata/tests/unit/test_genreqs.py .s                                    [ 60%]
guidata/tests/unit/test_h5fmt.py .                                       [ 62%]
guidata/tests/unit/test_jsonfmt.py .                                     [ 65%]
guidata/tests/unit/test_no_qt.py .                                       [ 67%]
guidata/tests/unit/test_text.py s                                        [ 70%]
guidata/tests/unit/test_translations.py .                                [ 72%]
guidata/tests/unit/test_updaterestoredataset.py .                        [ 75%]
guidata/tests/unit/test_userconfig_app.py .                              [ 77%]
guidata/tests/widgets/test_arrayeditor.py .                              [ 80%]
guidata/tests/widgets/test_arrayeditor_unit.py .                         [ 82%]
guidata/tests/widgets/test_codeeditor.py .                               [ 85%]
guidata/tests/widgets/test_collectionseditor.py .                        [ 87%]
guidata/tests/widgets/test_console.py F                                  [ 90%]
guidata/tests/widgets/test_dataframeeditor.py s                          [ 92%]
guidata/tests/widgets/test_importwizard.py .                             [ 95%]
guidata/tests/widgets/test_objecteditor.py .                             [ 97%]
guidata/tests/widgets/test_theme.py s                                    [100%]

=================================== FAILURES ===================================
_________________________________ test_console _________________________________

    def test_console():
        """Test Console widget."""
        with qt_app_context(exec_loop=True):
>           widget = Console(debug=False, multithreaded=True)

guidata/tests/widgets/test_console.py:22: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
guidata/widgets/console/__init__.py:51: in __init__
    InternalShell.__init__(
guidata/widgets/console/internalshell.py:176: in __init__
    PythonShellWidget.__init__(self, parent, profile)
guidata/widgets/console/shell.py:706: in __init__
    ShellBaseWidget.__init__(self, parent, profile, initial_message, read_only)
guidata/widgets/console/shell.py:82: in __init__
    ConsoleBaseWidget.__init__(self, parent)
guidata/widgets/console/base.py:1524: in __init__
    self.update_color_mode()
guidata/widgets/console/base.py:1529: in update_color_mode
    self.set_light_background(not qth.is_dark_theme())
guidata/widgets/console/base.py:1558: in set_light_background
    self.set_palette(background=bg_color, foreground=qth.get_foreground_color())
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <guidata.widgets.console.Console(0x1d1cca0) at 0x7fffaa41e2c0>
background = PySide6.QtGui.QColor.fromRgbF(1.000000, 1.000000, 1.000000, 1.000000)
foreground = PySide6.QtGui.QColor.fromRgbF(0.000000, 0.000000, 0.000000, 1.000000)

    def set_palette(self, background, foreground):
        """
        Set text editor palette colors:
        background color and caret (text cursor) color
        """
        palette = QPalette()
        # palette.setColor(QPalette.Base, background)
        palette.setColor(QPalette.Text, foreground)
>       palette.setColor(QPalette.Background, background)
E       AttributeError: type object 'PySide6.QtGui.QPalette' has no attribute 'Background'

guidata/widgets/console/base.py:371: AttributeError
=============================== warnings summary ===============================
guidata/tests/widgets/test_theme.py:71
  /build/source/guidata/tests/widgets/test_theme.py:71: PytestCollectionWarning: cannot collect test class 'TestWidget' because it has a __init__ constructor (from: guidata/tests/widgets/test_theme.py)
    class TestWidget(BaseTestWidget):

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
=========================== short test summary info ============================
FAILED guidata/tests/widgets/test_console.py::test_console - AttributeError: type object 'PySide6.QtGui.QPalette' has no attribute 'Back...
============== 1 failed, 35 passed, 4 skipped, 1 warning in 1.73s ==============

And with PyQt5 everything passes. Haven't checked PySide2 yet.

[doronbehar]

Transitively, tests in plotpy fail due to this I think. I also noticed this issue was discussed in PlotPyStack/PlotPy#11 ... Not sure exactly what made it become resolved. For the record, I use QT_QPA_PLATFORM=offscreen.

[PierreRaybaut]

@doronbehar : thanks for reporting the issue.
With the fix above, everything should be OK with V3.6.3 on PyQt5, PyQt6 and PySide6