Require a Pipfile.lock when using Pipenv#1833
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For historical reasons, the buildpack has supported using the package manager Pipenv without a lockfile. However, doing so results in non-deterministic installs (package versions can vary across environments) and so is unsafe / not recommended. As such, since #1695 in November 2024, we've shown a deprecation warning if apps have only a `Pipfile` and no `Pipfile.lock` file. Plenty of time has now passed, and metrics show usage very few apps hitting this warning. In addition, upstream Pipenv has also deprecated support for `--skip-lock`: pypa/pipenv@8775d59 As such, it's time to change this warning to an error. Affected apps will need to run `pipenv lock` and commit the resultant `Pipfile.lock` to Git. Closes #1702. GUS-W-17308738.
Malax
approved these changes
Jul 15, 2025
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For historical reasons, the buildpack has supported using the package manager Pipenv without a lockfile. However, doing so results in non-deterministic installs (package versions can vary across environments) and so is unsafe / not recommended.
As such, since #1695 in November 2024, we've shown a deprecation warning if apps have only a
Pipfileand noPipfile.lockfile.Plenty of time has now passed, and metrics show usage very few apps hitting this warning. In addition, upstream Pipenv has also deprecated support for
--skip-lock:pypa/pipenv@8775d59
As such, it's time to change this warning to an error.
Affected apps will need to run
pipenv lockand commit the resultantPipfile.lockto Git.Closes #1702.
GUS-W-17308738.