desktop/gnome: better theming

Signed-off-by: unexplrd <unexplrd@linerds.us>

modules/home/desktop/gnome/default.nix

@@ -1,4 +1,5 @@
 {
+  osConfig,
   config,
   pkgs,
   lib,
@@ -40,6 +41,30 @@ in {
       {package = pkgs.gnomeExtensions.pano;}
       {package = pkgs.gnomeExtensions.window-is-ready-remover;}
     ];
+    gtk = {
+      enable = true;
+      iconTheme = let
+        name =
+          if (lib.strings.hasPrefix "gruvbox" osConfig.module.stylix.theme)
+          then "Gruvbox-Plus-Dark"
+          else if config.stylix.polarity == "dark"
+          then "Papirus-Dark"
+          else "Papirus-Light";
+        package =
+          if (lib.strings.hasPrefix "gruvbox" osConfig.module.stylix.theme)
+          then pkgs.gruvbox-plus-icons
+          else if (lib.strings.hasPrefix "rose-pine" osConfig.module.stylix.theme)
+          then pkgs.papirus-icon-theme.override {color = "indigo";}
+          else if (lib.strings.hasPrefix "nord" osConfig.module.stylix.theme)
+          then pkgs.papirus-icon-theme.override {color = "nordic";}
+          else pkgs.papirus-icon-theme;
+      in {inherit name package;};
+    };
+    qt = {
+      enable = true;
+      platformTheme.name = lib.mkForce "adwaita";
+    };
+
     dconf.settings = with lib.hm.gvariant; {
       "org/gnome/desktop/a11y/applications" = {
         screen-reader-enabled = false;
@@ -59,7 +84,7 @@ in {
       };
 
       "org/gnome/desktop/interface" = {
-        accent-color = "slate";
+        # accent-color = "slate";
         clock-show-seconds = true;
         color-scheme = "prefer-dark";
         enable-animations = true;