Etcd rev 763 fails to install: Could not find a version that satisfies the requirement setuptools>=64

[Alexander Balderson]

Running some Openstack candidates tests, SQA tests using the candidate versions of all charms, and Etcd revision 763 on Jammy has failed to install with the error:

2024-04-13 14:28:12 WARNING unit.etcd/2.install logger.go:60 error: subprocess-exited-with-error
2024-04-13 14:28:12 WARNING unit.etcd/2.install logger.go:60
2024-04-13 14:28:12 WARNING unit.etcd/2.install logger.go:60 × pip subprocess to install build dependencies did not run successfully.
2024-04-13 14:28:12 WARNING unit.etcd/2.install logger.go:60 │ exit code: 1
2024-04-13 14:28:12 WARNING unit.etcd/2.install logger.go:60 ╰─> [3 lines of output]
2024-04-13 14:28:12 WARNING unit.etcd/2.install logger.go:60 Looking in links: wheelhouse
2024-04-13 14:28:12 WARNING unit.etcd/2.install logger.go:60 ERROR: Could not find a version that satisfies the requirement setuptools>=64 (from versions: 62.1.0)
2024-04-13 14:28:12 WARNING unit.etcd/2.install logger.go:60 ERROR: No matching distribution found for setuptools>=64
2024-04-13 14:28:12 WARNING unit.etcd/2.install logger.go:60 [end of output]
2024-04-13 14:28:12 WARNING unit.etcd/2.install logger.go:60
2024-04-13 14:28:12 WARNING unit.etcd/2.install logger.go:60 note: This error originates from a subprocess, and is likely not a problem with pip.
2024-04-13 14:28:12 WARNING unit.etcd/2.install logger.go:60 error: subprocess-exited-with-error
2024-04-13 14:28:12 WARNING unit.etcd/2.install logger.go:60
2024-04-13 14:28:12 WARNING unit.etcd/2.install logger.go:60 × pip subprocess to install build dependencies did not run successfully.
2024-04-13 14:28:12 WARNING unit.etcd/2.install logger.go:60 │ exit code: 1
2024-04-13 14:28:12 WARNING unit.etcd/2.install logger.go:60 ╰─> See above for output.
2024-04-13 14:28:12 WARNING unit.etcd/2.install logger.go:60
2024-04-13 14:28:12 WARNING unit.etcd/2.install logger.go:60 note: This error originates from a subprocess, and is likely not a problem with pip.
2024-04-13 14:28:13 WARNING unit.etcd/2.install logger.go:60 Traceback (most recent call last):
2024-04-13 14:28:13 WARNING unit.etcd/2.install logger.go:60 File "/var/lib/juju/agents/unit-etcd-2/charm/hooks/install", line 8, in <module>
2024-04-13 14:28:13 WARNING unit.etcd/2.install logger.go:60 basic.bootstrap_charm_deps()
2024-04-13 14:28:13 WARNING unit.etcd/2.install logger.go:60 File "/var/lib/juju/agents/unit-etcd-2/charm/lib/charms/layer/basic.py", line 226, in bootstrap_charm_deps
2024-04-13 14:28:13 WARNING unit.etcd/2.install logger.go:60 check_call([pip, 'install', '-U', reinstall_flag, '--no-index',
2024-04-13 14:28:13 WARNING unit.etcd/2.install logger.go:60 File "/usr/lib/python3.10/subprocess.py", line 369, in check_call
2024-04-13 14:28:13 WARNING unit.etcd/2.install logger.go:60 raise CalledProcessError(retcode, cmd)
2024-04-13 14:28:13 WARNING unit.etcd/2.install logger.go:60 subprocess.CalledProcessError: Command '['/var/lib/juju/agents/unit-etcd-2/.venv/bin/pip', 'install', '-U', '--force-reinstall', '--no-index', '--no-cache-dir', '-f', 'wheelhouse', 'flit-core==3.9.0', 'pyaml==21.10.1', 'tomli==2.0.1', 'charmhelpers==1.2.1', 'tenacity==8.2.3', 'idna==3.6', 'anyio==3.6.2', 'PyYAML==6.0.1', 'packaging==24.0', 'netaddr==0.7.19', 'flit-scm==1.7.0', 'Jinja2==3.1.3', 'pbr==6.0.0', 'charms.reactive==1.5.2', 'Cython==0.29.37', 'sniffio==1.3.1']' returned non-zero exit status 1.

I suspect that it affects other charms as well.

[Alexander Balderson (asbalderson)]

This is also present in 57 of EasyRSA

[Adam Dyess (addyess)]

This can be resolved by pulling in a python package pinning introduced into layer-basic by this commit

https://github.com/charmed-kubernetes/layer-basic/commit/6f70ad3ffb4aeba58893821f359de4dac07ae720