udevil: add systemd build option (off); use default path for cmds.

srcpkgs/udevil/template

@@ -1,11 +1,11 @@
 # Template file for 'udevil'
 pkgname=udevil
 version=0.4.3
-revision=2
+revision=3
 build_style=gnu-configure
+build_options="systemd"
 hostmakedepends="pkg-config intltool"
-configure_args="--with-mount-prog=mount --with-umount-prog=umount
- --with-losetup-prog=losetup --with-setfacl-prog=setfacl"
+configure_args="$(vopt_enable systemd)"
 makedepends="libglib-devel libudev-devel"
 conf_files="/etc/udevil/udevil.conf"
 short_desc="CLI which mounts and unmounts removable devices without a password"
@@ -16,7 +16,9 @@ distfiles="https://github.com/IgnorantGuru/udevil/archive/${version}.tar.gz"
 checksum=c49d2644baf87182c160550d708f75fe1253a2ceb749148e9148d7f1cfbc6209
 
 post_install() {
+	if [ "$build_option_systemd" ]; then
 		# Drop useless conf.d/devmon file.
 		rm -rf ${DESTDIR}/etc/conf.d
 		sed -e '/EnvironmentFile.*/d' -i ${DESTDIR}/usr/lib/systemd/system/devmon@.service
+	fi
 }