kvmd.install: Don't apply config patches again

kvmd.install

@@ -1,9 +1,12 @@
 # shellcheck disable=SC2148
 
+# arg 1: the new package version
 post_install() {
-	post_upgrade
+	post_upgrade "$1" ""
 }
 
+# arg 1: the new package version
+# arg 2: the old package version
 post_upgrade() {
 	echo "==> Ensuring KVMD users and groups ..."
 	systemd-sysusers /usr/lib/sysusers.d/kvmd.conf
@@ -52,15 +55,18 @@ post_upgrade() {
 	done
 
 	echo "==> Patching configs ..."
-	[ ! -f /etc/fstab ] || (sed -i -e "s|,data=journal||g" /etc/fstab && touch -t 200701011000 /etc/fstab)
-	[ ! -f /etc/fstab ] || (sed -i -e "/tmpfs \/run\s/d" /etc/fstab && touch -t 200701011000 /etc/fstab)
-	[ ! -f /etc/pacman.conf ] || sed -i -e "s|^Server = https://pikvm.org/repos/|Server = https://files.pikvm.org/repos/arch/|g" /etc/pacman.conf
-	[ ! -f /boot/config.txt ] || sed -i -e 's/^dtoverlay=pi3-disable-bt$/dtoverlay=disable-bt/g' /boot/config.txt
-	[ ! -f /boot/config.txt ] || sed -i -e 's/^dtoverlay=dwc2$/dtoverlay=dwc2,dr_mode=peripheral/g' /boot/config.txt
-	[ ! -f /etc/conf.d/rngd ] || (echo 'RNGD_OPTS="-o /dev/random -r /dev/hwrng -x jitter -x pkcs11 -x rtlsdr"' > /etc/conf.d/rngd)
-	[ ! -f /etc/pam.d/system-login ] || sed -i -e '/\<pam_systemd\.so\>/ s/^#*/#/' /etc/pam.d/system-login
-	[ ! -f /etc/pam.d/system-auth ] || sed -i -e '/\<pam_systemd_home\.so\>/ s/^#*/#/' /etc/pam.d/system-auth
-	[ -e /etc/systemd/network/99-default.link ] || ln -s /dev/null /etc/systemd/network/99-default.link
+
+	if [[ "$(vercmp "$1" 3.301)" -lt 0 ]]; then
+		[ ! -f /etc/fstab ] || (sed -i -e "s|,data=journal||g" /etc/fstab && touch -t 200701011000 /etc/fstab)
+		[ ! -f /etc/fstab ] || (sed -i -e "/tmpfs \/run\s/d" /etc/fstab && touch -t 200701011000 /etc/fstab)
+		[ ! -f /etc/pacman.conf ] || sed -i -e "s|^Server = https://pikvm.org/repos/|Server = https://files.pikvm.org/repos/arch/|g" /etc/pacman.conf
+		[ ! -f /boot/config.txt ] || sed -i -e 's/^dtoverlay=pi3-disable-bt$/dtoverlay=disable-bt/g' /boot/config.txt
+		[ ! -f /boot/config.txt ] || sed -i -e 's/^dtoverlay=dwc2$/dtoverlay=dwc2,dr_mode=peripheral/g' /boot/config.txt
+		[ ! -f /etc/conf.d/rngd ] || (echo 'RNGD_OPTS="-o /dev/random -r /dev/hwrng -x jitter -x pkcs11 -x rtlsdr"' > /etc/conf.d/rngd)
+		[ ! -f /etc/pam.d/system-login ] || sed -i -e '/\<pam_systemd\.so\>/ s/^#*/#/' /etc/pam.d/system-login
+		[ ! -f /etc/pam.d/system-auth ] || sed -i -e '/\<pam_systemd_home\.so\>/ s/^#*/#/' /etc/pam.d/system-auth
+		[ -e /etc/systemd/network/99-default.link ] || ln -s /dev/null /etc/systemd/network/99-default.link
+	fi
 
 	# Some update deletes /etc/motd, WTF
 	# shellcheck disable=SC2015,SC2166