Swap GTK theme to Colloid with purple modification

Swap Qt to use gtk2, should pick up from GTK theme then.

Remove additional packages bundled with sway, installed my own
versions.

home/desktop/default.nix

@@ -79,31 +79,40 @@
       inherit (config) scheme;
       inherit accentColourName;
     };
+    toCapital = string:
+      with lib; let
+        chars = let
+          lc = strings.splitString "" string;
+        in (lists.sublist 1 (lists.length lc - 2) lc);
+      in (
+        strings.concatStringsSep "" (
+          (lists.singleton (strings.toUpper (lists.elemAt chars 0)))
+          ++ (lists.sublist 1 (lists.length chars) chars)
+        )
+      );
   in {
     enable = true;
     gtk3 = {inherit extraCss;};
     gtk4 = {inherit extraCss;};
-    theme = {
-      package = pkgs.adw-gtk3;
-      name = "adw-gtk3";
+    theme = let
+      color = "purple";
+    in {
+      package = pkgs.colloid-gtk-theme.override {
+        themeVariants = [color];
+        colorVariants = [config.scheme.variant];
+      };
+      name = "Colloid-${toCapital color}-${toCapital config.scheme.variant}";
     };
-    iconTheme = {
-      package = pkgs.papirus-icon-theme.override {color = "violet";};
-      name =
-        if config.scheme.variant == "light"
-        then "Papirus-Light"
-        else "Papirus-Dark";
+    iconTheme = let
+      color = "violet";
+    in {
+      package = pkgs.papirus-icon-theme.override {inherit color;};
+      name = "Papirus-${toCapital config.scheme.variant}";
     };
   };
   qt = {
     enable = true;
-    style = {
-      package = pkgs.adwaita-qt;
-      name =
-        if config.scheme.variant == "light"
-        then "adwaita"
-        else "adwaita-dark";
-    };
+    style.name = "gtk2";
   };
   xdg = {
     mime.enable = true;

system/desktop.nix

@@ -64,7 +64,9 @@
       package =
         pkgs.swayfx.overrideAttrs
         (old: {passthru.providedSessions = ["sway"];});
+      extraPackages = [];
       wrapperFeatures.gtk = true;
+      xwayland.enable = true;
     };
     gamescope = {
       enable = true;
@@ -75,8 +77,8 @@
   gtk.iconCache.enable = true;
   qt = {
     enable = true;
-    style = "adwaita";
-    platformTheme = "gnome";
+    style = "gtk2";
+    platformTheme = "gtk2";
   };
   services = {
     dbus.packages = with pkgs; [gcr];