fix: add option to not install package for sway / swaylock

avoid problems with nix on Debian

modules/home-manager/desktop/sway/default.nix

@@ -7,6 +7,12 @@ in
   options.modules.desktop.sway = {
     enable = mkEnableOption "enable Sway Windows Manager";
 
+    installPackage = mkOption {
+      type = types.bool;
+      default = true;
+      description = "install Package, if false relies on distribution packages";
+    };
+
     kanshi = mkOption {
       type = types.bool;
       default = false;

modules/home-manager/desktop/sway/includes/sway.nix

@@ -7,6 +7,14 @@ in
   config = mkIf config.modules.desktop.sway.enable {
     wayland.windowManager.sway = {
 	    enable = true;
+
+      # Do not install sway package on other system that NixOS
+      # because performance issue 
+      package = 
+        if cfg.installPackage
+        then pkgs.sway
+        else null;
+      
       wrapperFeatures.gtk = true;
       systemd.enable = true;
       config = {
@@ -61,7 +69,10 @@ in
           "${mod}+Shift+q" = "kill"; 
           "${mod}+d" = "exec ${pkgs.fuzzel}/bin/fuzzel"; 
           "${mod}+Shift+c" = "reload"; 
-          "${mod}+Alt+l" = "exec ${pkgs.swaylock}/bin/swaylock";
+          "${mod}+Alt+l" = 
+            if cfg.installPackage
+            then "exec ${pkgs.swaylock}/bin/swaylock"
+            else "exec swaylock";
           "${mod}+${left} focus" = "left"; 
           "${mod}+${down} focus" = "down"; 
           "${mod}+${up} focus" = "up"; 

modules/home-manager/desktop/sway/includes/swayidle.nix

@@ -1,5 +1,8 @@
 { config, lib, pkgs, ... }:
 with lib;
+let
+  cfg = config.modules.desktop.sway;
+in
   {
     config = mkIf config.modules.desktop.sway.enable {
     services.swayidle = {
@@ -7,22 +10,34 @@ with lib;
       timeouts = [
         {
           timeout = 300;
-          command = "${pkgs.swaylock}/bin/swaylock -f";
+          command = 
+            if cfg.installPackage 
+            then "${pkgs.swaylock}/bin/swaylock -f"
+            else "swaylock -f";
         }
         {
           timeout = 600;
           command = ''${pkgs.sway}/bin/swaymsg  "output * power off"'';
-          resumeCommand = ''${pkgs.sway}/bin/swaymsg  "output * power on"'';
+          resumeCommand =
+            if cfg.installPackage 
+            then ''${pkgs.sway}/bin/swaymsg  "output * power on"''
+            else ''swaymsg "output * power on"'';
         }
       ];
       events = [
         {
           event = "before-sleep";
-          command = "${pkgs.swaylock}/bin/swaylock -f";
+          command =
+            if cfg.installPackage 
+            then "${pkgs.swaylock}/bin/swaylock -f"
+            else "swaylock -f";
         }
         {
           event = "lock";
-          command = "${pkgs.swaylock}/bin/swaylock -f";
+          command = 
+            if cfg.installPackage 
+            then "${pkgs.swaylock}/bin/swaylock -f"
+            else "swaylock -f";
         }
       ];
     };

modules/home-manager/desktop/sway/includes/swaylock.nix

@@ -1,4 +1,4 @@
-{ config, lib, ... }: 
+{ config, lib, pkgs, ... }: 
 with lib;
 let
   cfg = config.modules.desktop.sway;
@@ -7,6 +7,10 @@ in
   config = mkIf config.modules.desktop.sway.enable {
     programs.swaylock = {
       enable = true;
+      package =
+        if cfg.installPackage
+        then pkgs.swaylock
+        else pkgs.emptyDirectory;
       settings = {
         image = "${cfg.wallpapers.lockscreen}";
         scaling = "center";