Prework

• Read and agree to the code of conduct and contributing guidelines.
• Confirm that your issue is most likely a genuine bug in the targets package itself and not a user error, a known limitation, or a bug in another package that targets depends on. For miscellaneous troubleshooting, please post to the discussions instead.
• If there is already a relevant issue, whether open or closed, comment on the existing thread instead of posting a new issue.

Description

The latest renv ignores the _packages.R file written by tar_renv(). Easy to check with renv::dependencies(). The name _targets_packages.R seems to work, so let's go with that.