Hi Andreas, On 2021-12-23 12:09, Andreas Tille wrote: > error: Command '['/usr/bin/python3.10', '-m', 'pip', '--disable-pip-version-check', 'wheel', '--no-deps', '-w', '/tmp/tmp89sdjpdu', '--quiet', 'xmlschema']' returned non-zero exit status 1. Is Python package providing 'xmlschema' installed? To me this seems like setup.py attempts to install missing dependencies. Hope this helps, Andrius