Which version of pip are you using? I see you've been trying 3 different
approaches: default (presumably Python 2.7?) pip, pip3 and the APT
repository versions.
You could try updating the Python 3.x version of pip using pip itself,
rather than the apt-installed version. This seems to work for me (on Ubuntu
20.04):
❯ pip3 --version
pip 20.0.2 from /usr/lib/python3/dist-packages/pip (python 3.8)
❯ pip3 install -U pip
Collecting pip
Using cached pip-20.3.3-py2.py3-none-any.whl (1.5 MB)
Installing collected packages: pip
Successfully installed pip-20.3.3
❯ pip --version
pip 20.3.3 from /home/omf/.local/lib/python3.8/site-packages/pip (python
3.8)
❯ pip3 --version
pip 20.3.3 from /home/omf/.local/lib/python3.8/site-packages/pip (python
3.8)
❯ pip3 install -U PyQT5
Defaulting to user installation because normal site-packages is not
writeable
Requirement already satisfied: PyQT5 in /usr/lib/python3/dist-packages
(5.14.1)
Collecting PyQT5
Using cached
PyQt5-5.15.2-5.15.2-cp35.cp36.cp37.cp38.cp39-abi3-manylinux2014_x86_64.whl
(68.3 MB)
Requirement already satisfied: PyQt5-sip<13,>=12.8 in
/home/omf/.local/lib/python3.8/site-packages (from PyQT5) (12.8.1)
Installing collected packages: PyQT5
Successfully installed PyQT5-5.15.2
However, Mnemosyne wouldn't launch with this version of PyQT5 since this
Ubuntu APT repo only has QT 5.12.
I got past that with this:
❯ pip3 install -U PyQT5==5.14
Then it still wouldn't launch because:
>> ImportError: cannot import name 'QtWebEngineWidgets' from 'PyQt5'
(/home/omf/.local/lib/python3.8/site-packages/PyQt5/__init__.py)
It seemed I already had the required package installed via apt, and it was
needed for two other programs. I temporarily uninstalled them with:
❯ sudo apt remove python3-pyqt5.qtwebengine
❯ pip3 install PyQTWebEngine==5.14
Then I reinstalled the programs that depended on python3-pyqt5.qtwebengine,
and Mnemosyne works again.
Python packages can be a bit of a pain. That's why I prefer to deal with
them in "userspace" rather than system-wide "site-packages". But even
still, every few months I'll run into problems and have to reinstall
things. Well, it makes things exciting at least.
Oisín
On Fri, 15 Jan 2021 at 23:42, Carsten Alexander <aca...@web.de> wrote:
> Peter,
>
> > If you have troubles installing Pyqt5, that's not really a Mnemosyne
> issue.
> I know that, of course. But I have a general problem with the installation
> of the software or its dependencies and I need help with this.
>
> I took a few steps forward:
>
> 9. ~$ sudo apt-get install qt5-default qt5-qmake qtbase5-dev-tools qt5-doc
> 10. ~$ sudo python3 setup.py install
> 11. ~$ mnemosyne
> · Warning: Could not import OpenGL. Might cause a black screen on some
> Linux distributions. Try installing python3-opengl in that case.
> 12. ~$ sudo apt-get install python3-opengl
> 13. ~$ mnemosyne
> · Traceback (innermost last):
> File "/usr/local/bin/mnemosyne", line 4, in <module>
> __import__('pkg_resources').run_script('Mnemosyne==2.7.3',
> 'mnemosyne')
> File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py",
> line 658, in run_script
> self.require(requires)[0].run_script(script_name, ns)
> File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py",
> line 1438, in run_script
> exec(code, namespace, namespace)
> File
> "/usr/local/lib/python3.6/dist-packages/Mnemosyne-2.7.3-py3.6.egg/EGG-INFO/scripts/mnemosyne",
> line 150, in <module>
> from PyQt5 import QtWebEngineWidgets # Needs to happen first
> for some reason.
> ModuleNotFoundError: No module named 'PyQt5'
>
> I suspect the problem is still with PyQt5 and will contact the appropriate
> forum. In any case, thank you for your support so far.
>
> --
> Best Regards,
> Carsten Alexander
>
> Peter Bienstman schrieb am Freitag, 15. Januar 2021 um 22:09:54 UTC+1:
>
>> Hi,
>>
>> If you have troubles installing Pyqt5, that's not really a Mnemosyne
>> issue. Perhaps on your distro you need to install Pyqt using the system
>> package manager as opposed to pip? Otherwise you could also ask on a forum
>> devoted to your distribution?
>>
>> Peter
>>
>> On Fri, 15 Jan 2021, 21:58 Carsten Alexander, <aca...@web.de> wrote:
>>
>>> Thanks Peter,
>>>
>>> after removing Mnemosyne, I tried an installation – strictly according
>>> to the documentation. But she faltered while installing PyQt5.
>>>
>>> My protocol:
>>> 1. ~$ sudo apt-get autoremove mnemosyne
>>> 2. ~$ sudo apt-get install mnemosyne
>>> · Traceback (innermost last):
>>> File "/usr/bin/mnemosyne", line 224, in <module>
>>> "ConfigurationWdgtCramming")]
>>> AttributeError: 'Mnemosyne' object has no attribute
>>> 'extra_components_for_plugin'
>>> 3. ~$ sudo apt-get autoremove mnemosyne
>>> 4. ~$ sudo pip install --upgrade PyQt5 matplotlib cheroot webob pillow
>>> googletrans gTTS
>>> · Could not find a version that satisfies the requirement PyQt5 (from
>>> versions: none)
>>> · No matching distribution found for PyQt5
>>> 5. ~$ sudo pip install --upgrade pip
>>> 6. ~$ sudo pip install --upgrade PyQt5 matplotlib cheroot webob pillow
>>> googletrans gTTS
>>> · Could not find a version that satisfies the requirement PyQt5 (from
>>> versions: none)
>>> · No matching distribution found for PyQt5
>>> 7. ~$ sudo apt-get install python3-cherrypy3 python3-matplotlib
>>> python3-pip python3-setuptools python3-webob
>>> 8. ~$ sudo pip3 install PyQt5
>>> · Traceback (most recent call last):
>>> File "<string>", line 1, in <module>
>>> File "/usr/lib/python3.6/tokenize.py", line 452, in open
>>> buffer = _builtin_open(filename, 'rb')
>>> FileNotFoundError: [Errno 2] No such file or directory:
>>> '/tmp/pip-build-d9q9nt3o/PyQt5/setup.py'
>>> (I checked it. There is no such directory like „pip-build-d9q9nt3o”
>>> in /tmp.)
>>>
>>> Any ideas?
>>>
>>> --
>>> Best Regards,
>>> Carsten Alexander
>>> Peter Bienstman schrieb am Freitag, 15. Januar 2021 um 06:40:42 UTC+1:
>>>
>>>> Hi,
>>>>
>>>> My guess is that you have a mixture of old and new Mnemosyne files
>>>> somewhere. Try uninstalling both the system version and your latest
>>>> version, and try again.
>>>>
>>>> Peter
>>>>
>>>> On Fri, 15 Jan 2021, 06:37 Carsten Alexander, <aca...@web.de> wrote:
>>>>
>>>>> Hi folks,
>>>>>
>>>>> after I made an unsuccessful attempt to update Mnemosyne from 2.4
>>>>> (according to Mnemosyne » Help » About) to version 2.7.3 (according to ~$
>>>>> mnemosyne --version), Mnemosyne no longer starts and breaks with the error
>>>>> message
>>>>>
>>>>> Log body:
>>>>> An unexpected error has occurred.
>>>>> Please forward the following info to the developers:
>>>>>
>>>>> Traceback (innermost last):
>>>>> File "/usr/bin/mnemosyne", line 224, in <module>
>>>>> "ConfigurationWdgtCramming")]
>>>>> AttributeError: 'Mnemosyne' object has no attribute
>>>>> 'extra_components_for_plugin'
>>>>>
>>>>> from. What can I do? I can still remember the process reasonably well.
>>>>> So if you need additional information, please ask me . My system:
>>>>>
>>>>> Os: Ubuntu 18.04.5 LTS
>>>>> Memory: 7.8 GiB
>>>>> Processor: Intel® Core™ i5-3570K CPU @ 3.40GHz × 4
>>>>> Grafix: NV117
>>>>> GNOME: 3.28.2
>>>>> Type: 64-bit
>>>>>
>>>>> --
>>>>> Best regards,
>>>>> Carsten Alexander
>>>>>
>>>>>
>>>>> --
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>>>>> .
>>>>>
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>>>
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