Felix Förtsch 1ece944a45 initial implementation: multi-user Steam shared library via bwrap overlay ...

Share one Steam game library across multiple Linux users with fully
isolated Proton prefixes. Uses bubblewrap to create a per-user kernel
overlay on /opt/steam/steamapps/compatdata/ so game files stay shared
while Proton prefixes are isolated per user, with no compatibility
tool selection or per-game configuration required.

Includes:
- steam-shared launcher that sets up the per-user overlay and execs
  Steam inside a bwrap mount namespace
- activate/uninstall scripts plus an add-user helper for steamshare
  group membership
- permission watcher (steam-fix-perms.path/.service) to keep ACLs
  correct under pressure-vessel's restrictive mode bits
- .desktop override that routes the system Steam launcher through
  steam-shared
- Nix flake exposing activate, uninstall, and add-user packages
- design doc and implementation plan covering the approach

2026-04-15 09:53:09 +02:00

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