paccache.service.in: Lower priority of unit

The unit will be run in the background and is not essential for systems
to operate, so giving it the lowest priority will help make it less
disruptive on its system.
Signed-off-by: Frederik “Freso” S. Olesen <freso.dk@gmail.com>
Signed-off-by: Daniel M. Capella <polyzen@archlinux.org>

src/paccache.service.in

@@ -4,6 +4,13 @@ Description=Remove unused cached package files
 [Service]
 Type=oneshot
 ExecStart=@bindir@/paccache -r
+# Lowering priority
+OOMScoreAdjust=1000
+Nice=19
+CPUSchedulingPolicy=idle
+CPUSchedulingPriority=1
+IOSchedulingClass=idle
+IOSchedulingPriority=7
 # Sandboxing and other hardening
 ProtectProc=invisible
 ProcSubset=pid