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Yesterday's, today's update broke cura dependencies
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I use "cura" for 3D printing. It worked yesterday before the last Solus updates. Now I get the following error:

$ cura
Error in sys.excepthook:
Traceback (most recent call last):

File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 678, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/usr/lib/python3.6/site-packages/cura/", line 31, in <module>
  from UM.Qt.QtApplication import QtApplication #The class we're inheriting from.
File "/usr/lib/python3.6/site-packages/UM/Qt/", line 16, in <module>
  from UM.Backend.Backend import Backend #For typing.
File "/usr/lib/python3.6/site-packages/UM/Backend/", line 12, in <module>
  from UM.Backend.SignalSocket import SignalSocket
File "/usr/lib/python3.6/site-packages/UM/Backend/", line 4, in <module>
  import Arcus

ValueError: PyCapsule_GetPointer called with incorrect name

Original exception was:
Traceback (most recent call last):

File "/usr/bin/cura", line 133, in <module>
  import Arcus #@UnusedImport

ModuleNotFoundError: No module named 'sip'

Note sip is installed!

Event Timeline

klausb created this task.Feb 25 2019, 11:44 AM
Harvey added a subscriber: Harvey.Feb 27 2019, 12:59 AM

Just passing along some information. A friend of mine also encountered this, he resolved it by running
sudo pip3 install sip

Even tho the python-sip and python3-sip are installed from the repository.

sudo pip3 install sip fixes the issue.

Thank you!

Girtablulu triaged this task as Normal priority.Feb 28 2019, 2:27 PM
Girtablulu edited projects, added Software; removed Lacks Project.
Girtablulu moved this task from Backlog to Package Fixes on the Software board.