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Add precondition check for skipping tox self-provisioned env

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Fixes #35
This commit is contained in:
Ethan Paul 2021-01-22 19:11:54 -05:00
parent 366c50ac87
commit 59bf9ad26e
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1 changed files with 10 additions and 0 deletions
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10
tox_poetry_installer/utilities.py
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@ -145,6 +145,16 @@ def find_transients(
def check_preconditions(venv: ToxVirtualEnv, action: ToxAction) -> "_poetry.Poetry":
"""Check that the local project environment meets expectations"""
# Skip running the plugin for the provisioning environment. The provisioned environment,
# for alternative Tox versions and/or the ``requires`` meta dependencies is specially
# handled by Tox and is out of scope for this plugin. Since one of the ways to install this
# plugin in the first place is via the Tox provisioning environment, it quickly becomes a
# chicken-and-egg problem.
if action.name == venv.envconfig.config.provision_tox_env:
raise exceptions.SkipEnvironment(
f"Skipping Tox provisioning env '{action.name}'"
)
# Skip running the plugin for the packaging environment. PEP-517 front ends can handle
# that better than we can, so let them do their thing. More to the point: if you're having
# problems in the packaging env that this plugin would solve, god help you.