systemd: tentative to manage session with systemd

To me, I think it was cleaner to have a parameter with the current
display. This way, the session is specific to the current display. It
seems BindsTo doesn't think this way.

bin/compton

@@ -1,8 +0,0 @@
-#!/bin/sh
-
-exec compton \
-     --backend glx \
-     --xrender-sync \
-     --xrender-sync-fence \
-     --vsync opengl-swc \
-     --paint-on-overlay

bin/xsettingsd-setup

@@ -9,9 +9,6 @@ case $(hostname),$(autorandr --current --skip-options gamma) in
     *,*)                dpi=96 ;;
 esac
 
-# Get xsettingsd PID
-pid=$(xprop -name xsettingsd _NET_WM_PID 2> /dev/null | awk '{print $NF}')
-
 change() {
     # Build xsettingsd.local
     {
@@ -23,11 +20,7 @@ change() {
     } > ~/.xsettingsd
 
     # Signal xsettingsd
-    if [ x"$pid" = x ]; then
-        xsettingsd -c ~/.xsettingsd &
-    else
-        kill -HUP $pid
-    fi
+    systemctl --user reload xsettingsd@$(systemd-escape -- "$DISPLAY").service
 
     # Also use xrdb for very old stuff (you know, LibreOffice)
     echo Xft.dpi: $dpi | xrdb -merge

bin/xss-lock

@@ -42,9 +42,9 @@ case "$1" in
         xdotool key XF86AudioStop
         # Then, lock screen
         echo "$(date --rfc-3339=seconds) $me: lock: lock screen"
-        pkill compton
+        systemctl --user stop compton@$(systemd-escape -- "$DISPLAY").service
         i3lock -n -e -i $HOME/.cache/awesome/current-wallpaper.png -t -f
-        ~/.config/awesome/bin/compton &
+        systemctl --user start compton@$(systemd-escape -- "$DISPLAY").service
         echo "$(date --rfc-3339=seconds) $me: lock: unlock screen"
         ;;
 esac