sxhkd: set scope OOMPolicy to continue

When a process inside the sxhkd scope is OOM killed, if the OOM policy
is set to `stop` then the sxhkd scope itself will exit, terminating
every process launched from the keyboard.

This is undesirable, set it to `continue` instead to keep other
processes running.

modules/services/sxhkd.nix

@@ -75,7 +75,7 @@ in {
       sxhkdCommand = "${cfg.package}/bin/sxhkd ${toString cfg.extraOptions}";
     in ''
       systemctl --user stop sxhkd.scope 2> /dev/null || true
-      systemd-cat -t sxhkd systemd-run --user --scope -u sxhkd ${sxhkdCommand} &
+      systemd-cat -t sxhkd systemd-run --user --scope --property=OOMPolicy=continue -u sxhkd ${sxhkdCommand} &
     '';
   };
 }

tests/modules/services/sxhkd/service.nix

@@ -21,6 +21,6 @@
       'systemctl --user stop sxhkd.scope 2> /dev/null || true'
 
     assertFileContains $xsessionFile \
-      'systemd-cat -t sxhkd systemd-run --user --scope -u sxhkd @sxhkd@/bin/sxhkd -m 1 &'
+      'systemd-cat -t sxhkd systemd-run --user --scope --property=OOMPolicy=continue -u sxhkd @sxhkd@/bin/sxhkd -m 1 &'
   '';
 }