How do YOU manage Perl modules when using a package manager?

Question

A recent question here on SO got me thinking.

On most Linux distributions that I tried, some Perl modules would be available through the package manager. Others, of

Answer 1

For production:

In development, choose a version of the perl module which seems right for the requirements; if possible choose the target OS's shipped version (this makes most of the following superfluous), otherwise, pick another one. Create a RPM spec file for it. Use the clean build VM to build the RPM in a reproducable way (from a specfile / source checked in on the appropriate branch).

When the final build can be built (after merge), do the same build from the release branch, commit generated RPMs into deployment repository. This will be used in final validation and then released to production by being copied to the production repository.

All servers in production use the exact same binary that has been fully tested; they use the same spec file and source as the developer intended.

Perl modules are NOT upgraded by any process which does not follow this model. Nor is any other production software.