Should setting any env-vars in an environment prevent those in the template/default being inherited?

[awgymer]

I have created a default env with the following:

[tool.hatch.envs.default.env-vars]
PIP_INDEX_URL = "<my-custom-pypi-url>"

I then define a docs env with:

[tool.hatch.envs.docs.env-vars]
PYTHONUNBUFFERED = "1"
MKDOCS_CONFIG = "mkdocs.yml"

And now I notice that the PIP_INDEX_URL is not set to the one in default when I run hatch env show.

Similarly I have a detached lint env and that does not appear to inherit any env-vars despite not setting any itself.

Are these expected behaviours?