Use configuration file defined by COVERAGE_RCFILE environment variable in Python coverage actions.

[oxidase]

Description of the feature request:

Python coverage does not allow to modify a generated coverage rcfile with content

[run]
relative_files = True

and it would be nice to have a possibility to use a developer-defined rc file, eg. pyproject.toml, in bazel coverage actions.

What underlying problem are you trying to solve with this feature?

There is no way to specify user-defined coverage settings eg via pyproject.toml file like

[tool.coverage.report]
# Regexes for lines to exclude from consideration
exclude_lines = [
    "if 0:",
    "if __name__ ==",
    "raise NotImplementedError",
    "def __repr__",
]
show_missing = true

[tool.coverage.run]
relative_files = true

Which operating system are you running Bazel on?

MacOS

What is the output of bazel info release?

release 6.1.1

If bazel info release returns development version or (@non-git), tell us how you built Bazel.

No response

What's the output of git remote get-url origin; git rev-parse master; git rev-parse HEAD ?

https://github.com/oxidase/bazel
a20728b7e1236b18cc9e9201a35f145aeff2277d
6b7e4e4158d7bd09974149aeed23add5d7e2d809

Have you found anything relevant by searching the web?

No response

Any other information, logs, or outputs that you want to share?

No response