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OSX: PySide6 doesn't work when PyQt5 is installed #183

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cbrnr opened this issue Apr 24, 2023 · 6 comments
Closed
1 task done

OSX: PySide6 doesn't work when PyQt5 is installed #183

cbrnr opened this issue Apr 24, 2023 · 6 comments
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@cbrnr
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cbrnr commented Apr 24, 2023

Solution to issue cannot be found in the documentation.

  • I checked the documentation.

Issue

In theory, it should be possible to install both PySide6 and PyQt5 in parallel. However, this does not work with the corresponding conda-forge packages pyside6 and pyqt.

$ mamba create -n qt pyqt pyside6
$ conda activate qt
$ python -c "from PyQt5.QtWidgets import QApplication, QWidget; app = QApplication([])"
$ python -c "from PySide6.QtWidgets import QApplication, QWidget; app = QApplication([])"

Whereas PyQt5 works, PySide6 gives the following error when running the command above:

qt.core.plugin.loader: In /Users/clemens/mambaforge/envs/qt/plugins/platforms/libqwebgl.dylib:
  Plugin uses incompatible Qt library (5.15.0) [release]
qt.core.plugin.loader: In /Users/clemens/mambaforge/envs/qt/plugins/platforms/libqoffscreen.dylib:
  Plugin uses incompatible Qt library (5.15.0) [release]
qt.core.plugin.loader: In /Users/clemens/mambaforge/envs/qt/plugins/platforms/libqminimal.dylib:
  Plugin uses incompatible Qt library (5.15.0) [release]
qt.core.plugin.loader: In /Users/clemens/mambaforge/envs/qt/plugins/platforms/libqcocoa.dylib:
  Plugin uses incompatible Qt library (5.15.0) [release]
qt.qpa.plugin: Could not find the Qt platform plugin "cocoa" in ""
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

[1]    15574 abort      python3 -c

After mamba uninstall pyqt, this command works without errors.

Installed packages

# packages in environment at /Users/clemens/mambaforge/envs/qt:
#
# Name                    Version                   Build  Channel
bzip2                     1.0.8                h0d85af4_4    conda-forge
ca-certificates           2022.12.7            h033912b_0    conda-forge
cairo                     1.16.0            h297c08e_1015    conda-forge
double-conversion         3.2.0                hf0c8a7f_1    conda-forge
expat                     2.5.0                hf0c8a7f_1    conda-forge
font-ttf-dejavu-sans-mono 2.37                 hab24e00_0    conda-forge
font-ttf-inconsolata      3.000                h77eed37_0    conda-forge
font-ttf-source-code-pro  2.038                h77eed37_0    conda-forge
font-ttf-ubuntu           0.83                 hab24e00_0    conda-forge
fontconfig                2.14.2               h5bb23bf_0    conda-forge
fonts-conda-ecosystem     1                             0    conda-forge
fonts-conda-forge         1                             0    conda-forge
freetype                  2.12.1               h3f81eb7_1    conda-forge
gettext                   0.21.1               h8a4c099_0    conda-forge
glib                      2.76.2               h7d26f99_0    conda-forge
glib-tools                2.76.2               h7d26f99_0    conda-forge
graphite2                 1.3.13            h2e338ed_1001    conda-forge
gst-plugins-base          1.22.0               h37e1711_2    conda-forge
gstreamer                 1.22.0               h1d18e73_2    conda-forge
harfbuzz                  6.0.0                hc28939c_1    conda-forge
icu                       72.1                 h7336db1_0    conda-forge
krb5                      1.20.1               h049b76e_0    conda-forge
lerc                      4.0.0                hb486fe8_0    conda-forge
libclang                  14.0.6          default_h55ffa42_0    conda-forge
libclang13                14.0.6          default_hb5731bd_0    conda-forge
libcxx                    16.0.2               hd57cbcb_0    conda-forge
libdeflate                1.18                 hac1461d_0    conda-forge
libedit                   3.1.20191231         h0678c8f_2    conda-forge
libexpat                  2.5.0                hf0c8a7f_1    conda-forge
libffi                    3.4.2                h0d85af4_5    conda-forge
libglib                   2.76.2               hc62aa5d_0    conda-forge
libiconv                  1.17                 hac89ed1_0    conda-forge
libjpeg-turbo             2.1.5.1              hb7f2c08_0    conda-forge
libllvm14                 14.0.6               h5b596cc_1    conda-forge
libogg                    1.3.4                h35c211d_1    conda-forge
libopus                   1.3.1                hc929b4f_1    conda-forge
libpng                    1.6.39               ha978bb4_0    conda-forge
libpq                     15.2                 h3640bf0_0    conda-forge
libsqlite                 3.40.0               ha978bb4_1    conda-forge
libtiff                   4.5.0                hedf67fa_6    conda-forge
libvorbis                 1.3.7                h046ec9c_0    conda-forge
libwebp-base              1.3.0                hb7f2c08_0    conda-forge
libxml2                   2.10.4               h554bb67_0    conda-forge
libxslt                   1.1.37               h5d22bc9_0    conda-forge
libzlib                   1.2.13               hfd90126_4    conda-forge
mysql-common              8.0.32               hc4b2c72_1    conda-forge
mysql-libs                8.0.32               h8658499_1    conda-forge
ncurses                   6.3                  h96cf925_1    conda-forge
nspr                      4.35                 hea0b92c_0    conda-forge
nss                       3.89                 h78b00b3_0    conda-forge
openssl                   3.1.0                h8a1eda9_1    conda-forge
packaging                 23.1               pyhd8ed1ab_0    conda-forge
pcre2                     10.40                h1c4e4bc_0    conda-forge
pip                       23.1.1             pyhd8ed1ab_0    conda-forge
pixman                    0.40.0               hbcb3906_0    conda-forge
ply                       3.11                       py_1    conda-forge
pyqt                      5.15.7          py311h8771221_3    conda-forge
pyqt5-sip                 12.11.0         py311h78fa98d_3    conda-forge
pyside6                   6.5.0           py311hee85f53_1    conda-forge
python                    3.11.3          h99528f9_0_cpython    conda-forge
python_abi                3.11                    3_cp311    conda-forge
qt-main                   5.15.8               h0afe88e_9    conda-forge
qt6-main                  6.5.0                h9bbdc2a_4    conda-forge
readline                  8.2                  h9e318b2_1    conda-forge
setuptools                67.7.1             pyhd8ed1ab_0    conda-forge
sip                       6.7.9           py311hdf8f085_0    conda-forge
tk                        8.6.12               h5dbffcc_0    conda-forge
toml                      0.10.2             pyhd8ed1ab_0    conda-forge
tomli                     2.0.1              pyhd8ed1ab_0    conda-forge
tzdata                    2023c                h71feb2d_0    conda-forge
wheel                     0.40.0             pyhd8ed1ab_0    conda-forge
xz                        5.2.6                h775f41a_0    conda-forge
zlib                      1.2.13               hfd90126_4    conda-forge
zstd                      1.5.2                hbc0c0cd_6    conda-forge

Environment info

active environment : qt
    active env location : /Users/clemens/mambaforge/envs/qt
            shell level : 2
       user config file : /Users/clemens/.condarc
 populated config files : /Users/clemens/mambaforge/.condarc
          conda version : 23.1.0
    conda-build version : not installed
         python version : 3.10.10.final.0
       virtual packages : __archspec=1=x86_64
                          __osx=11.7.6=0
                          __unix=0=0
       base environment : /Users/clemens/mambaforge  (writable)
      conda av data dir : /Users/clemens/mambaforge/etc/conda
  conda av metadata url : None
           channel URLs : https://conda.anaconda.org/conda-forge/osx-64
                          https://conda.anaconda.org/conda-forge/noarch
          package cache : /Users/clemens/mambaforge/pkgs
                          /Users/clemens/.conda/pkgs
       envs directories : /Users/clemens/mambaforge/envs
                          /Users/clemens/.conda/envs
               platform : osx-64
             user-agent : conda/23.1.0 requests/2.28.2 CPython/3.10.10 Darwin/20.6.0 OSX/11.7.6
                UID:GID : 501:20
             netrc file : None
           offline mode : False
@cbrnr cbrnr added the bug label Apr 24, 2023
@cbrnr cbrnr mentioned this issue Apr 24, 2023
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@hmaarrfk
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There are some integration challenges on osx.

Please see
conda-forge/qt-main-feedstock#150 (comment)

I think the issues are common for x86 and arm

@cbrnr
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cbrnr commented Apr 25, 2023

Is there anything I can do to help? It seems to me that the solution is to make PySide6 use bin/qt6.conf, but I am not really familiar with the intricacies of the issue. I tested only with x86, but I assume that the problem also affects arm64.

@hmaarrfk
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Let's discuss on the other issue.

@cbrnr
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cbrnr commented Apr 25, 2023

Alright, feel free to close this issue if it is really a duplicate and if it can be fixed over there.

@hmaarrfk
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Let's keep it open for visibility. But the solution I'm fairly confident is in qt-main (first) then maybe a follow-on here.

@hmaarrfk hmaarrfk changed the title PySide6 doesn't work when PyQt5 is installed OSX: PySide6 doesn't work when PyQt5 is installed May 29, 2023
@jschueller
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I tested and its ok now

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@hmaarrfk @jschueller @cbrnr