(address . bug-guix@gnu.org)
When trying to use thunar-volman to manage removable media, thunar tells the user in its settings that gvfs cannot be found.
Running
```
guix shell --pure dbus hicolor-icon-theme gdk-pixbuf gvfs thunar-volman thunar -- thunar
```
has the same problem, so there's probably a bug with one of the packages.