Excel ファイルを開こうとすると落ちる

```sh
(Raxcel-dev-linux-amd64:9654): GLib-GIO-ERROR **: 09:15:56.789: Settings schema 'org.gtk.Settings.FileChooser' is not installed
SIGTRAP: trace trap
PC=0x7fdc43d0edbf m=4 sigcode=128
signal arrived during cgo execution
```