Working with resolves & different Python versions is a bit confusing to me I've got 2 resolve files, one with py37 and the other with py38 My code supports both of them so in my

BUILD

file I did

python_sources(
    interpreter_constraints=['>=3.7'],
    resolve=parametrize('py_37', 'py_38'),
)

but then I got this error

The inputs use interpreter constraints (`CPython>=3.7`) that are not a subset of those used to generate the lockfile (`CPython==3.7.*`).

How can I have it support both resolve files at the same time?

Can you apply the

parametrize

to the

interpreter_constraints

field as well? Like this: https://www.pantsbuild.org/2.22/docs/python/overview/interpreter-compatibility#setting-the-default-python-version Then you could make it:

interpreter_constraints=parametrize('==3.7.*', '==3.8.*')

Or if the second lockfile was generated with a different set of constraints, you can sub in those too

Thanks! That makes sense. I'll look into that and report back