Add gtk4 configuration

config/gtk-4.0/settings.ini

@@ -0,0 +1,16 @@
+[Settings]
+gtk-theme-name=Sweet-Dark
+#gtk-icon-theme-name=Sweet-Rainbow
+gtk-font-name=Fira Sans 12
+gtk-cursor-theme-name=capitaine-cursors-light
+gtk-cursor-theme-size=0
+gtk-toolbar-style=GTK_TOOLBAR_ICONS
+gtk-toolbar-icon-size=GTK_ICON_SIZE_LARGE_TOOLBAR
+gtk-button-images=1
+gtk-menu-images=1
+gtk-enable-event-sounds=0
+gtk-enable-input-feedback-sounds=0
+gtk-xft-antialias=1
+gtk-xft-hinting=1
+gtk-xft-hintstyle=hintslight
+gtk-xft-rgba=rgb

configuration.nix

@@ -47,6 +47,7 @@ in
       # src: https://unix.stackexchange.com/questions/632879/how-to-set-a-system-wide-gtk-theme-in-nixos
       "gtk-2.0/gtkrc".source =  ./config/gtk-2.0/gtkrc;
       "gtk-3.0/settings.ini".source =  ./config/gtk-3.0/settings.ini;
+      "gtk-4.0/settings.ini".source =  ./config/gtk-4.0/settings.ini;
     };
   };