ModuleNotFoundError: No module named 'compas.files.xml'

[odellus]

Describe the bug

The line from compas_fab.backends import RosClient results in the error `ModuleNotFoundError: No module named 'compas.files.xml'

To Reproduce Steps to reproduce the behavior:

1. Context - bash
2. Steps to reproduce: python3 -m pip install compas_fab & python3 -c 'from compas_fab.backends import RosClient'
3. Sample data - N/A
4. Error message - ModuleNotFoundError: No module named 'compas.files.xml'

Expected behavior

I expect to be able to import RosClient from compas_fab.backends

Screenshots

Add screenshots to help explain your problem (if applicable).

Desktop (please complete the following information):

• OS: Ubuntu 20.04 on Windows 10 WSL2
• Python version 3.8
• Python package manager pip

Additional context

I'm running the ROS websocket through Docker though I doubt that matters. This seems like a Python issue.

[gonzalocasas]

Thanks for the report @odellus!

I just tested the pip install on Ubuntu and indeed, the documented one causes issues, I had other issues before the one you encountered, but they are most likely related. The recommended way to get compas_fab installed is via conda, but regardless, the pip install should definitely work.

Could you please try to install cython before installing any compas package? ie. python3 -m pip install cython --install-option="--no-cython-compile" and only then python3 -m pip install compas_fab. I tried on a clean environment and that got rid of all install errors. Please let me know if that works and I will update the docs accordingly.

[odellus]

python3 -m pip uninstall compas compas_fab
python3 -m pip install cython
python3 -m pip install compas_fab

worked. Thank you! Closing.