[3dprinter-general] Bug#958943: cura: Cura 4.5.0-1 crashes on start

[Hendrie Bosch]

Package: cura
Version: 4.5.0-1
Severity: normal
Tags: d-i

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
I was trying to start Cura

   * What exactly did you do (or not do) that was effective (or
     ineffective)?
I typed: $ cura
Also with the same outcome: $ sudo cura

   * What was the outcome of this action?
/usr/lib/python3/dist-packages/UM/PluginRegistry.py:4: DeprecationWarning: the
imp module is deprecated in favour of importlib; see the module's documentation
for alternative uses
  import imp
Traceback (most recent call last):
  File "/usr/bin/cura", line 21, in <module>
    from cura.CrashHandler import CrashHandler
  File "/usr/lib/python3/dist-packages/cura/CrashHandler.py", line 27, in
<module>
    from UM.Application import Application
  File "/usr/lib/python3/dist-packages/UM/Application.py", line 9, in <module>
    from UM.Controller import Controller
  File "/usr/lib/python3/dist-packages/UM/Controller.py", line 4, in <module>
    from UM.Scene.Scene import Scene
  File "/usr/lib/python3/dist-packages/UM/Scene/Scene.py", line 13, in <module>
    from UM.Mesh.ReadMeshJob import ReadMeshJob  # To reload a mesh when its
file was changed.
  File "/usr/lib/python3/dist-packages/UM/Mesh/ReadMeshJob.py", line 8, in
<module>
    from UM.FileHandler.ReadFileJob import ReadFileJob
  File "/usr/lib/python3/dist-packages/UM/FileHandler/ReadFileJob.py", line 5,
in <module>
    from UM.FileHandler.FileHandler import FileHandler
  File "/usr/lib/python3/dist-packages/UM/FileHandler/FileHandler.py", line 12,
in <module>
    from UM.PluginRegistry import PluginRegistry
  File "/usr/lib/python3/dist-packages/UM/PluginRegistry.py", line 21, in
<module>
    from UM.Trust import Trust
  File "/usr/lib/python3/dist-packages/UM/Trust.py", line 9, in <module>
    from cryptography.hazmat.backends import default_backend
ModuleNotFoundError: No module named 'cryptography'

   * What outcome did you expect instead?
Cura to start up.




-- System Information:
Debian Release: bullseye/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 5.5.0-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=nl_NL.UTF-8, LC_CTYPE=nl_NL.UTF-8 (charmap=UTF-8), LANGUAGE=nl_NL.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages cura depends on:
ii  cura-engine                         1:4.5.0-2+b1
ii  fdm-materials                       4.5.0-1
ii  fonts-open-sans                     1.11-1
ii  python3                             3.8.2-3
ii  python3-charon                      4.5.0-1
ii  python3-pyqt5                       5.14.2+dfsg-1+b1
ii  python3-pyqt5.qtopengl              5.14.2+dfsg-1+b1
ii  python3-requests                    2.23.0+dfsg-2
ii  python3-savitar                     4.5.0-1+b1
ii  python3-serial                      3.4-5.1
ii  python3-shapely                     1.7.0-1+b1
ii  python3-uranium                     4.5.0-1
ii  qml-module-qt-labs-folderlistmodel  5.12.5-5
ii  qml-module-qt-labs-settings         5.12.5-5
ii  qml-module-qtqml-models2            5.12.5-5
ii  qml-module-qtquick-controls         5.12.5-1+b1
ii  qml-module-qtquick-controls2        5.12.5+dfsg-2+b1
ii  qml-module-qtquick-dialogs          5.12.5-1+b1
ii  uranium-plugins                     4.5.0-1

Versions of packages cura recommends:
ii  python3-zeroconf  0.23.0-1

cura suggests no packages.

-- no debconf information