Index: plasma-desktop-5.8.5/kcms/dateandtime/helper.cpp
===================================================================
--- plasma-desktop-5.8.5.orig/kcms/dateandtime/helper.cpp
+++ plasma-desktop-5.8.5/kcms/dateandtime/helper.cpp
@@ -48,10 +48,6 @@
 #include <sys/types.h>
 #endif

-// We cannot rely on the $PATH environment variable, because D-Bus activation
-// clears it. So we have to use a reasonable default.
-static const QString exePath = QStringLiteral("/usr/sbin:/usr/bin:/sbin:/bin");
-
 int ClockHelper::ntp(const QStringList &ntpServers, bool ntpEnabled)
 {
     int ret = 0;
@@ -227,7 +223,7 @@ int ClockHelper::tzreset()
 
 void ClockHelper::toHwclock()
 {
-    QString hwclock = QStandardPaths::findExecutable(QStringLiteral("hwclock"), exePath.split(QLatin1Char(':')));
+    QString hwclock = QLatin1String(NIXPKGS_HWCLOCK);
     if (!hwclock.isEmpty()) {
         KProcess::execute(hwclock, QStringList() << QStringLiteral("--systohc"));
     }