Motivation for this change

I was chasing a bug with xfce4-14 automatic screen locking so I thought it was related to the missing screensaver component. The bug was solved by an upgrade, so the hypothesis was wrong.

It turned out xfce-screensaver password prompt to unlock sometimes flickers which makes it difficult to login again. The error messages I get are unhelpful at best:

pam_warn(xfce4-screensaver:auth): function=[pam_sm_authenticate] flags=0 service=[xfce4-screensaver] terminal=[:0.0] user=[jane] ruser=[<unknown>] rhost=[<unknown>]

Googling yields nothing and https://bugzilla.xfce.org/ seems down so I cannot even file an issue.
Anyhow I spent more time on this than I originally intended and the PR as is as broken. Either someone has an idea to solve the aforementioned problem or we drop the PR or we disable pam support. You still get a nice screensaver but no password prompt to unlock ¯\(ツ)/¯

Things done

tested in a vm

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nix-review --run "nix-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Ensured that relevant documentation is up to date
• Fits CONTRIBUTING.md.

Notify maintainers

cc @