graphical/sway: add option to only lock screen

modules/graphical/sway/config/config.d/mode_system.conf.nix

@@ -2,35 +2,36 @@
   pkgs,
   psCfg,
   ...
-}:
+}: with pkgs; 
 ''
   # Set shut down, restart and locking features
 ''
 + (
   if psCfg.core.hibernation.enable
   then ''
-    set $mode_system (e)xit, (h)ibernate, (r)eboot, (Shift+s)hutdown
+    set $mode_system (e)xit, (l)ock, (h)ibernate, (r)eboot, (Shift+s)hutdown
   ''
   else ''
-    set $mode_system (e)xit, (r)eboot, (Shift+s)hutdown
+    set $mode_system (e)xit, (l)ock, (r)eboot, (Shift+s)hutdown
   ''
 )
 + ''
   bindsym $mod+0 mode "$mode_system"
 
   mode "$mode_system" {
-    bindsym e exec swaymsg exit, mode "default"
+    bindsym e exec ${sway}/bin/swaymsg exit, mode "default"
+    bindsym l exec ${swaylock-bg}/bin/swaylock-bg, mode "default"
 ''
 + (
   if psCfg.core.hibernation.enable
   then ''
-    bindsym h exec systemctl hibernate, mode "default"
+    bindsym h exec ${systemd}/bin/systemctl hibernate, mode "default"
   ''
   else ""
 )
 + ''
-    bindsym r exec systemctl reboot, mode "default"
-    bindsym Shift+s exec systemctl poweroff, mode "default"
+    bindsym r exec ${systemd}/bin/systemctl reboot, mode "default"
+    bindsym Shift+s exec ${systemd}/bin/systemctl poweroff, mode "default"
 
     # exit system mode: "Enter" or "Escape"
     bindsym Return mode "default"

modules/graphical/sway/swayidle.service.nix

@@ -13,11 +13,13 @@
   Service = {
     Type = "simple";
     Environment = "PATH=/run/current-system/sw/bin:${pkgs.sway}/bin:${pkgs.swayidle}/bin";
-    ExecStart = ''
+    ExecStart = with pkgs; ''
       swayidle -w \
-      before-sleep 'systemctl hibernate'
-      timeout 120 'swaymsg "output * dpms off"' resume 'swaymsg "output * dpms on"' \
-      timeout 150 'systemctl hibernate'
+      before-sleep '${systemd}/bin/systemctl hibernate' \
+      timeout 120 '${swaylock-bg}/bin/swaylock-bg' \
+      timeout 130 '${sway}/bin/swaymsg "output * dpms off"' \
+        resume '${sway}/bin/swaymsg "output * dpms on"' \
+      timeout 300 '${systemd}/bin/systemctl hibernate'
     '';
   };
   Install = {

pkgs/default.nix

@@ -18,6 +18,7 @@ with prev; {
   s = writeShellScriptBin "s" (import ./s.nix final);
   sway-launcher = writeScriptBin "sway-launcher" (import ./sway-launcher.nix final);
   sway-service = writeShellScriptBin "sway-service" (import ./sway-service.nix final);
+  swaylock-bg = writeShellScriptBin "swaylock-bg" (import ./swaylock-bg.nix final);
   toggle-kbd-layout = writeShellScriptBin "toggle-kbd-layout" (import ./toggle-kbd-layout.nix final);
   wcwd = writeShellScriptBin "wcwd" (import ./wcwd.nix final);
   drone-docker-runner = writeShellScriptBin "drone-docker-runner" (import ./drone-docker-runner.nix final);

pkgs/swaylock-bg.nix

@@ -0,0 +1,13 @@
+self:
+with self; ''
+  # Dependencies:
+  # swaylock
+  IMAGE="$XDG_CONFIG_HOME/wallpaper.jpg"
+  LOCKARGS=""
+
+  for OUTPUT in $(${sway}/bin/swaymsg --type get_outputs | ${jq}/bin/jq --raw-output '.[].name')
+  do
+      LOCKARGS="''${LOCKARGS} --image ''${OUTPUT}:''${IMAGE}"
+  done
+  exec ${swaylock}/bin/swaylock --scaling fill --daemonize $LOCKARGS
+''