pipenv sync doesn't work without Pipfile

[konstantinmiller]

I'm trying to initialize a production environment from Pipfile.lock. I have an empty directory with a Pipfile.lock and run pipenv sync. It fails with the following message:

Error: Pipfile.lock is missing! You need to run $ pipenv lock first.
Aborted!

Note that Pipfile.lock is there. It's rather the Pipfile that is missing but my understanding is that you don't need it when you do pipenv sync.

[frostming]

This issue is well discussed in #2834 and is definitely a direction to improve, thanks for report, close this issue now.