1{ ... }:
 2{
 3  # Out-of-memory management with systemd-oomd
 4  # Uses memory pressure metrics (PSI) to kill processes/slices before system hangs
 5  # Particularly useful for laptops with unpredictable memory usage (browsers, dev tools)
 6  systemd.oomd = {
 7    enable = true;
 8    enableRootSlice = true; # Monitor / cgroup
 9    enableSystemSlice = true; # Monitor system services
10    enableUserSlices = true; # Monitor user sessions (browsers, etc.)
11  };
12}