another reorg; add options for full or minimal helix install

configuration/base/kde.nix

@@ -0,0 +1,43 @@
+{ pkgs, lib, ... }:
+
+let
+  kwin = lib.concatStringsSep " " [
+    "${lib.getBin pkgs.kdePackages.kwin}/bin/kwin_wayland"
+    "--no-global-shortcuts"
+    "--no-kactivities"
+    "--no-lockscreen"
+    "--locale1"
+    "--inputmethod maliit-keyboard"
+  ];
+in
+{
+  services.xserver.enable = true; # optional
+
+  # Configure keymap in X11
+  # services.xserver.xkb.layout = "us";
+  # services.xserver.xkb.options = "eurosign:e,caps:escape";
+
+  services.displayManager.sddm = {
+    enable = true;
+    wayland.enable = true;
+    settings = {
+      Wayland = {
+        CompositorCommand = kwin;
+      };
+    };
+  };
+  services.desktopManager.plasma6.enable = true;
+
+  # Specific fix for cursor in steam
+  xdg.icons.fallbackCursorThemes = [ "breeze_cursors" ];
+
+  environment.systemPackages = with pkgs;
+    [ maliit-keyboard ] ++ (with kdePackages; [
+      sddm-kcm
+      plasma-disks
+      partitionmanager
+      filelight
+      ffmpegthumbs
+      kcalc
+    ]);
+}