I'm randomly getting this error when trying to generate coverage in my repo - can somebody explain to me what this means?

stderr:
Failed to resolve compatible artifacts from lock tools.lock for 1 target:
1. /opt/pyenv/versions/3.8.20/bin/python3.8:
    Failed to resolve all requirements for cp38-cp38-manylinux_2_27_x86_64 interpreter at /opt/pyenv/versions/3.8.20/bin/python3.8 from tools.lock:
Configured with:
    build: True
    use_wheel: True
Dependency on exceptiongroup (via: pytest -> exceptiongroup>=1.0.0rc8; python_version < "3.11") not satisfied, no candidates found.
Dependency on tomli not satisfied, no candidates found:
    requirers:
    via: pytest -> tomli>=1; python_version < "3.11"
    via: pytest-cov -> coverage[toml]>=5.2.1 -> tomli; python_full_version <= "3.11.0a6" and extra == "toml"
Dependency on coverage not satisfied, 1 incompatible candidate found:
1.) coverage 7.6.2 (via: pytest-cov -> coverage[toml]>=5.2.1) requires Python >=3.9

Has this been working previously, or not at all? It does look like this current log was from trying with python 3.8 and coverage is asking for >=3.9. What does it give as the issue when you run with a higher python version?

Figured it out, it looks like coverage >6.x does not support Python 3.8 and the lockfile doesn't automatically pull down these requirements only needed for specific versions, so they have to be included explicitly. I think errors for versions >3.8 was me misinterpreting the output because I have lots of tests parametrized for different Python versions.

Figured it out, it looks like coverage >6.x does not support Python 3.8 and the lockfile doesn't automatically pull down these

This is with the bundled with Pants coverage lockfile, or your own?

My own, but the one bundled with Pants does not support some newer Python syntax. Namely multi-with context managers (

with a() as b, c() as d:

) and the

match

statement.