If the gtk2 and gtk3 are moved to `nativeBuildInputs` then this happens
```
Cannot load module /nix/store/sn268l2xkdvkvagq1r35xy9071zns4hx-ibus-with-plugins-1.5.32/lib/gtk-3.0/3.0.0/immodules/im-ibus.so: /nix/store/sn268l2xkdvkvagq1r35xy9071zns4hx-ibus-with-plugins-1.5.32/lib/gtk-3.0/3.0.0/immodules/im-ibus.so: cannot open shared object file: No such file or directory
> /nix/store/sn268l2xkdvkvagq1r35xy9071zns4hx-ibus-with-plugins-1.5.32/lib/gtk-3.0/3.0.0/immodules/im-ibus.so does not export GTK+ IM module API: /nix/store/sn268l2xkdvkvagq1r35xy9071zns4hx-ibus-with-plugins-1.5.32/lib/gtk-3.0/3.0.0/immodules/im-ibus.so: cannot open shared object file: No such file or directory
```
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