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Allows overriding PIP_EXISTS_ACTION environment variable (it was forced to w) #3738

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merged 8 commits into from
Jun 4, 2019
Merged

Allows overriding PIP_EXISTS_ACTION environment variable (it was forced to w) #3738

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92d2c5b
add PIP_EXISTS_ACTION
simion May 9, 2019
c873490
allow overriding PIP_EXISTS_ACTION via environment variable
simion May 9, 2019
64ff154
Merge branch 'master' into master
techalchemy May 20, 2019
8bf0da4
Merge branch 'master' into master
simion May 20, 2019
61a3798
Merge branch 'master' into master
techalchemy May 27, 2019
b9c89ed
Merge branch 'master' into master
simion Jun 2, 2019
d259ec5
updated docs
simion Jun 2, 2019
72a19de
Merge branch 'master' into master
techalchemy Jun 4, 2019
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3 changes: 3 additions & 0 deletions news/3738.feature.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
Allow overriding PIP_EXISTS_ACTION evironment variable (value is passed to pip install).
Possible values here: https://pip.pypa.io/en/stable/reference/pip/#exists-action-option
Useful when you need to `PIP_EXISTS_ACTION=i` (ignore existing packages) - great for CI environments, where you need really fast setup.
4 changes: 2 additions & 2 deletions pipenv/core.py
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Expand Up @@ -26,7 +26,7 @@
PIPENV_CACHE_DIR, PIPENV_COLORBLIND, PIPENV_DEFAULT_PYTHON_VERSION,
PIPENV_DONT_USE_PYENV, PIPENV_HIDE_EMOJIS, PIPENV_MAX_SUBPROCESS,
PIPENV_PYUP_API_KEY, PIPENV_SHELL_FANCY, PIPENV_SKIP_VALIDATION,
PIPENV_YES, SESSION_IS_INTERACTIVE
PIPENV_YES, SESSION_IS_INTERACTIVE, PIP_EXISTS_ACTION
)
from .project import Project, SourceNotFound
from .utils import (
Expand Down Expand Up @@ -1513,7 +1513,7 @@ def pip_install(
"PIP_DESTINATION_DIR": vistir.misc.fs_str(
cache_dir.joinpath("pkgs").as_posix()
),
"PIP_EXISTS_ACTION": vistir.misc.fs_str("w"),
"PIP_EXISTS_ACTION": vistir.misc.fs_str(PIP_EXISTS_ACTION or "w"),
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@uranusjr uranusjr May 19, 2019 •
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Is this a good idea? The line in environments.py sets w when the variable is missing, so maybe we should respect the user explicitly setting it to an empty string.

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That would just mean using the pip defaults which seems fine to me, I don't think it matters much -- probably better to be consistent and do less hidden assumptions

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@uranusjr may be right, we should leave it to PIP, in case it gets overriden by empty string.
However, explicit is better than implicit.
Your choice.

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Honestly I doubt whether anyone would care about this extreme edge case, so in the end it’s only a theoretical preference.

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I'll be happy to merge this either way, planning to do so once CI passes

"PATH": vistir.misc.fs_str(os.environ.get("PATH")),
}
if src:
Expand Down
7 changes: 6 additions & 1 deletion pipenv/environments.py
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Expand Up @@ -234,6 +234,12 @@ def _is_env_truthy(name):
NOTE: This only affects the ``install`` and ``uninstall`` commands.
"""

PIP_EXISTS_ACTION = os.environ.get("PIP_EXISTS_ACTION", "w")
"""Specifies the value for pip's --exists-action option

Defaullts to (w)ipe
"""

PIPENV_RESOLVE_VCS = _is_env_truthy(os.environ.get("PIPENV_RESOLVE_VCS", 'true'))
"""Tells Pipenv whether to resolve all VCS dependencies in full.

Expand All @@ -242,7 +248,6 @@ def _is_env_truthy(name):
approach, you may set this to '0', 'off', or 'false'.
"""


PIPENV_PYUP_API_KEY = os.environ.get(
"PIPENV_PYUP_API_KEY", "1ab8d58f-5122e025-83674263-bc1e79e0"
)
Expand Down