Dear Maintainer,

pam_limit.so is installed  but for some reason, it is not
included into /etc/pam.d/common-session. This means that
there is no possibility to define system wide or per-user
limitations.

Please add the module to the common-session file to make
it available.
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I think it would be valuable to get pam_limits into common-session.
I think the reason we didn't do it back in the day was that we didn't
have as clear of a common-session vs common-session-noninteractive
distinction.

That said, I think it's way too late in the bullseye cycle to do this.
I'm writing to say that as someone reasonably familiar with PAM, I think
this is worth doing early in a release cycle where we can shake out the
problems.

Doing this would probably involve adding in common-session and filing
bugs against pam  services that include common-session suggesting that
they remove.