Theme: set gtk settings declaratively

overlays/sway.nix

@@ -16,30 +16,4 @@
       systemctl --user start pipewire pipewire-media-session xdg-desktop-portal xdg-desktop-portal-wlr
     '';
   };
-
-  # currently, there is some friction between sway and gtk:
-  # https://github.com/swaywm/sway/wiki/GTK-3-settings-on-Wayland
-  # the suggested way to set gtk settings is with gsettings
-  # for gsettings to work, we need to tell it where the schemas are
-  # using the XDG_DATA_DIR environment variable
-  # run at the end of sway config
-  configure-gtk = pkgs.writeTextFile {
-    name = "configure-gtk";
-    destination = "/bin/configure-gtk";
-    executable = true;
-    text =
-      let
-        schema = pkgs.gsettings-desktop-schemas;
-        datadir = "${schema}/share/gsettings-schemas/${schema.name}";
-      in
-      ''
-        export XDG_DATA_DIRS=${datadir}:$XDG_DATA_DIRS
-        gnome_schema=org.gnome.desktop.interface
-        gsettings set $gnome_schema gtk-theme '${pkgs.uservars.gtk_theme}'
-        gsettings set $gnome_schema icon-theme '${pkgs.uservars.icon_theme}'
-        gsettings set $gnome_schema cursor-theme '${pkgs.uservars.cursor_theme}'
-        gsettings set $gnome_schema color-scheme prefer-${pkgs.uservars.color.type}
-      '';
-  };
-
 })

user/theme.nix

@@ -28,6 +28,15 @@ with pkgs.uservars; {
   #   # style.name = "gtk2";
   # };
 
+  dconf.settings = {
+    "org/gnome/desktop/interface" = {
+      gtk-theme = pkgs.uservars.gtk_theme;
+      icon-theme = pkgs.uservars.icon_theme;
+      cursor-theme = pkgs.uservars.cursor_theme;
+      color-scheme = "prefer-${pkgs.uservars.color.type}";
+    };
+  };
+
   # fonts.fontconfig.enable = true;
   xdg.configFile = {
     "qt5ct/qt5ct.conf".text = ''
@@ -72,9 +81,4 @@ with pkgs.uservars; {
     nerdfonts_fira_hack
     material-wifi-icons
   ];
-  home.activation = {
-    update_gtk = lib.hm.dag.entryAfter [ "writeBoundary" ] ''
-      $DRY_RUN_CMD ${pkgs.configure-gtk}/bin/configure-gtk
-    '';
-  };
 }