Support --system to pipenv sync

[matthijskooijman]

I'm trying to install dependencies inside of tox, which I believe needs --system (to install into tox's virtualenv instead of into pipenvs own virtualenv). See also #154.

However, pipenv sync, which is the new way to install dependencies from Pipfile.lock does not support --system (it seems it was intentionally left out initially in #1463), so I have to resort to pipenv install.

It seems it would be useful to support --system for sync as well.

[kennethreitz]

+1

[matthijskooijman]

I just tried aca8e12 from @frostming's branch, and it works as expected in my usecase (see https://travis-ci.org/evolution-events/Artaxerxes/jobs/382857314). Thanks!

[txomon]

Hey, just in case pipenv uses Tox's virtualenv directly, with no intervention needed. ( for example https://circleci.com/gh/txomon/mosbot/17)

[nre-ableton]

I really would appreciate having pipenv sync --system as well. This would be the preferred way to use pipenv in a Docker container. At the moment I'm using pipenv install --system --deploy which is not as great of a solution.

It seems that this issue has stalled. Would it make sense to take
aca8e12 and make a PR from it?

[jonbesga]

Is there any difference between pipenv install --ignore-pipfile and pipenv sync?

I'm currently using pipenv install --system --ignore-pipfile when I want to install dependencies from the Pipfile.lock into the system.

Update: Found an explanation in #3150, it seems that using the pipenv install --system --ignore-pipfile --deploy should be equivalent to pipenv sync

[BenjamenMeyer]

I've managed to get pipenv sync and pipenv install --system --ignore-pipfile --deploy to mostly function under tox, but if I'm running directly through tox then something always fails to install and it never recovers. If I go into the virtualenv then everything installs just fine.

[shunkakinoki]

+1

[mortezaPRK]

there is a workaround which I'm using in my deployments.

in CI, I will check if Pipfile.lock and Pipfile are in sync in a CI pipeline during tests:

pipenv install --deploy

then, during creation of Docker images, I don't include Pipfile and use pipenv install --ignore-pipfile --deploy --system.

rm Pipefile
touch Pipefile
pipenv install --ignore-pipfile --deploy --system

It is the fastest method I found.