Support loading config from pyproject.toml #606
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Signed-off-by: Alvaro Frias Garay <alvarofriasgaray@gmail.com>
Signed-off-by: Alvaro Frias Garay <alvarofriasgaray@gmail.com>
tomli was ported to stdlib tomllib, so it's preferable to use these implementations for clearer (and more standard/common style) compatibility across versions. In order to have the failthrough behavior be clear, with dispatch onto TOML support controlled via a bool, this is wrapped in a module which provides failover on import errors per the normal path to prefer tomllib where available. 'tomli' is not required by nose2, not even on lower python versions, to ensure that application testing which is sensitive to and dispatched over the presence/absence of a toml loader is supported. tox matrix config supports toml-enabled test invocation for the lower python versions.
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This is a continuation of the work started in #596 -- thanks to @qequ for getting this started!
I've made some changes which I believe are important to nose2 supporting the full breadth of use cases, including test matrices which run tests with TOML parsers present and absent in lower python versions.
In general, I think
nose2should avoid addig dependencies outside of the stdlib, since it is a test runner.There's some room for healthy debate on this, but with the current course of
tomli->tomllib, I don't think it's necessary for TOML support to add a hard dependency or an extra.