xmonad :D

build.conf.nix

@@ -1,6 +1,8 @@
 with builtins;
 {
-  wm = "kde";
+  wm = "xmonad";
 
+  # very, very non-exhaustive of course
   is-x11     = wm: elem wm ["kde" "xmonad"];
+  is-wayland = wm: elem wm ["hyprland" "sway"];
 }

configuration.nix

@@ -147,6 +147,12 @@ in
   environment.variables.SHELL  = "fish";
   environment.variables.TERM   = "kitty";
 
+  services.xserver.windowManager.xmonad = if conf.wm == "xmonad"
+  then {
+    enable = true;
+    enableContribAndExtras = true;
+  } else {};
+
   # List services that you want to enable:
 
   # Enable the OpenSSH daemon.

home.nix

@@ -28,6 +28,7 @@ in
     starship
     exa
     ghc
+    dmenu
   ];
 
   programs.fish = {
@@ -136,7 +137,7 @@ in
         main = xmonad defaultConfig
             { terminal    = "kitty"
             , modMask     = mod4Mask
-            , borderWidth = 3
+            , borderWidth = 1
             }
       '';
   } else {};