i3: adapt config to nix

i3/i3/config

@@ -185,7 +185,7 @@ mode "resize" {
 bindsym $mod+r mode "resize"
 
 bar {
-    font pango:DejaVu Sans Mono, Font Awesome 18
+    font pango:DejaVu Sans Mono, Font Awesome {{bar-font-size}}
     status_command i3status-rs
     position bottom
 
@@ -283,9 +283,15 @@ exec --no-startup-id nm-applet
 exec --no-startup-id blueman-applet
 exec --no-startup-id xfce4-power-manager
 exec --no-startup-id nextcloud
+# exec --no-startup-id xfce4-screensaver
 
 # Authentication agent
+exec --no-startup-id /usr/bin/env gnome-keyring-daemon --start
+{{#if dotter.packages.nix}}
+exec --no-startup-id /etc/manual-links/polkit-gnome-authentication-agent-1
+{{else}}
 exec --no-startup-id /usr/lib/polkit-gnome/polkit-gnome-authentication-agent-1
+{{/if}}
 
 # Notify about software updates
 exec --no-startup-id pamac-tray
@@ -302,8 +308,13 @@ exec --no-startup-id pa-applet
 exec --no-startup-id nitrogen --restore
 
 # Notifications
-exec --no-startup-id dunst -config ~/.config/dunst/dunstrc
-# exec --no-startup-id /usr/lib/xfce4/notifyd/xfce4-notifyd
+# exec --no-startup-id dunst -config ~/.config/dunst/dunstrc
+
+{{#if dotter.packages.nix}}
+exec --no-startup-id /etc/manual-links/xfce4-notifyd
+{{else}}
+exec --no-startup-id /usr/lib/xfce4/notifyd/xfce4-notifyd
+{{/if}}
 
 # exec --no-startup-id xautolock -time 10 -locker blurlock
 exec_always --no-startup-id ff-theme-util