Every module imports cleanup.nix (also exported as
homeManagerModules.cleanup), which
- puts steam-frame-nix-cleanup (install.sh cleanup) on PATH;
- runs `cleanup --orphans --quiet` after linkGeneration on every switch,
keeping what the configuration still uses (steamFrame.cleanup.keep, set
by the modules: debugger while steamvrDebugger is on, the Firefox desktop
profile's user.js while its fix applies); in a dry run it runs with
--dry-run;
- runs `cleanup --all` instead when Home Manager's `uninstall = true;` is
set (the manual uninstall route);
- removes links of older versions at paths Home Manager is about to own
before checkLinkTargets (steamFrame.cleanup.migrateLinks), which would
count as collisions otherwise.
install.sh cleanup gains --quiet (only actions, deferrals and warnings;
the header only when something is printed). The Jellyfin module's own
removal of the old shim copy goes: cleanup does it.
