Add support for uv based charm builds#406
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wilkmar wants to merge 1 commit into
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brianphaley
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Jun 18, 2026
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lgtm, but i'll let others comment
raineszm
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Thanks for this. I've definitely run into issues with python version incompatibility when trying to use the functest runner script.
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Zaza functional tests require Python 3.10, while some charm branches require Python 3.12 to build. This means functional tests must run on Jammy (Python 3.10), but the func runner would fail to build charms that require Python 3.12. To work around this, add support for building charms with uv, which allows running the 'build' tox target with an arbitrary Python version. The required Python version is detected from the charm repo's tox.ini using 'tox --showconfig -e build', falling back to 3.12 on failure. uv-based builds are currently not supported with '--remote-build' Signed-off-by: Marcin Wilk <marcin.wilk@canonical.com>
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Zaza functional tests require Python 3.10, while some charm branches
require Python 3.12 to build. This means functional tests must run on
Jammy (Python 3.10), but the func runner would fail to build charms
that require Python 3.12.
To work around this, add support for building charms with uv, which
allows running the 'build' tox target with an arbitrary Python version.
The required Python version is detected from the charm repo's tox.ini
using 'tox --showconfig -e build', falling back to 3.12 on failure.
uv-based builds are currently not supported with '--remote-build'