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-rw-r--r--nixos/modules/system/activation/switch-to-configuration.pl4
1 files changed, 3 insertions, 1 deletions
diff --git a/nixos/modules/system/activation/switch-to-configuration.pl b/nixos/modules/system/activation/switch-to-configuration.pl
index 7aa4b12a654..4289740322a 100644
--- a/nixos/modules/system/activation/switch-to-configuration.pl
+++ b/nixos/modules/system/activation/switch-to-configuration.pl
@@ -322,7 +322,9 @@ foreach my $device (keys %$prevSwaps) {
 
 
 # Should we have systemd re-exec itself?
-my $restartSystemd = abs_path("/proc/1/exe") ne abs_path("@systemd@/lib/systemd/systemd");
+my $prevSystemd = abs_path("/proc/1/exe") or die;
+my $newSystemd = abs_path("@systemd@/lib/systemd/systemd") or die;
+my $restartSystemd = $prevSystemd ne $newSystemd;
 
 
 sub filterUnits {