From d45b4f4a4328ced5e291e6c309437599647c02e0 Mon Sep 17 00:00:00 2001
From: Scott Olson <scott@solson.me>
Date: Wed, 7 Jul 2021 19:43:16 +0100
Subject: Use PATH lookup for systemctl in systemd meter

Before this change, the systemd meter was broken on distros like NixOS,
which have systemctl in PATH, but not at /bin/systemctl. After the
change, it works on all my NixOS machines.
---
 linux/SystemdMeter.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/linux/SystemdMeter.c b/linux/SystemdMeter.c
index 8ffb6130..245bb7b2 100644
--- a/linux/SystemdMeter.c
+++ b/linux/SystemdMeter.c
@@ -219,15 +219,15 @@ static void updateViaExec(void) {
          exit(1);
       dup2(fdnull, STDERR_FILENO);
       close(fdnull);
-      execl("/bin/systemctl",
-            "/bin/systemctl",
-            "show",
-            "--property=SystemState",
-            "--property=NFailedUnits",
-            "--property=NNames",
-            "--property=NJobs",
-            "--property=NInstalledJobs",
-            NULL);
+      execlp("systemctl",
+             "systemctl",
+             "show",
+             "--property=SystemState",
+             "--property=NFailedUnits",
+             "--property=NNames",
+             "--property=NJobs",
+             "--property=NInstalledJobs",
+             NULL);
       exit(127);
    }
    close(fdpair[1]);
-- 
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