### Bug Description Building https://github.com/jnsgruk/hello-kubecon in CI, there's for example this: ``` Installing dependencies :: Running external command ['python3', '-m', 'venv', '/root/parts/charm/build/staging-venv'] :: Running external command ['/root/parts/charm/build/staging-venv/bin/pip', 'install', '--force-reinstall', 'pip@https://files.pythonhosted.org/packages/c0/d0/9641dc7b05877874c6418f8034ddefc809495e65caa14d38c7551cd114bb/pip-24.1.1.tar.gz'] :: :: WARNING: The directory '/root/.cache/pip' or its parent directory is not owned or is not writable by the current user. The cache has been disabled. Check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag. ``` https://github.com/canonical/operator/actions/runs/12045070299/job/33583075577?pr=1461 ### To Reproduce build a charm using charmcraft 3.2.2 ### Environment CI, so amd64, charmcraft 3.2.2, targeting 20.04 I believe. ### charmcraft.yaml ```yaml ... ``` ### Relevant log output ```shell ... ```