wip: switch to niri [skip-ci]

Looks cooler c:

home/options.nix

@@ -78,13 +78,23 @@ let
     example = "/sys/class/hwmon/hwmon2/temp1_input";
   };
 
-  sway.options = {
-    enable = lib.mkEnableOption "sway" // {
+  windowManager.options = {
+    enable = lib.mkEnableOption "window manager" // {
       default = fromConfig [
         "gui"
-        "sway"
+        "windowManager"
+        "enable"
       ] true;
     };
+    windowManager = lib.mkOption {
+      description = "Which window manager to enable";
+      type = types.enum [ "niri" ];
+      default = fromConfig [
+        "gui"
+        "windowManager"
+        "windowManager"
+      ] "niri";
+    };
     background = lib.mkOption {
       description = "The wallpaper to use.";
       type = types.path;
@@ -114,26 +124,6 @@ let
       default = true;
       example = false;
     };
-    exec = lib.mkOption {
-      description = "Run commands when starting sway.";
-      default = { };
-      type = types.submodule {
-        options = {
-          once = lib.mkOption {
-            description = "Programs to start only once (`exec`).";
-            type = types.listOf types.str;
-            default = [ ];
-            example = [ "signal-desktop --start-in-tray" ];
-          };
-          always = lib.mkOption {
-            description = "Programs to start whenever the config is sourced (`exec_always`).";
-            type = types.listOf types.str;
-            default = [ ];
-            example = [ "signal-desktop --start-in-tray" ];
-          };
-        };
-      };
-    };
   };
 
   gui.options =
@@ -152,10 +142,10 @@ let
         default = null;
         type = types.nullOr (types.submodule tempInfo);
       };
-      sway = lib.mkOption {
-        description = "Sway window manager configuration.";
+      windowManager = lib.mkOption {
+        description = "Window manager configuration.";
         default = { };
-        type = types.submodule sway;
+        type = types.submodule windowManager;
       };
       terminal = lib.mkOption {
         description = "The terminal emulator to use.";

system/options.nix

@@ -37,7 +37,20 @@ let
         options.autoStart = mkDisableOption "autostarting ydotool at login";
       };
     };
-    windowManager = mkDisableOption "window manager";
+    windowManager = lib.mkOption {
+      description = "Window manager configuration";
+      default = { };
+      type = types.submodule {
+        options = {
+          enable = mkDisableOption "window manager";
+          windowManager = lib.mkOption {
+            description = "Which window manager to enable";
+            type = types.enum [ "niri" ];
+            default = "niri";
+          };
+        };
+      };
+    };
   };
 
   styling.options = {