If I `ssh` into the machine:
```
[matthew@t480:~]$ env | grep QT_
QT_STYLE_OVERRIDE=adwaita-dark
QT_QPA_PLATFORMTHEME=gnome
QT_PLUGIN_PATH=/home/matthew/.nix-profile/lib/qt4/plugins:/home/matthew/.nix-profile/lib/kde4/plugins:/etc/profiles/per-user/matthew/lib/qt4/plugins:/etc/profiles/per-user/matthew/lib/kde4/plugins:/nix/var/nix/profiles/default/lib/qt4/plugins:/nix/var/nix/profiles/default/lib/kde4/plugins:/run/current-system/sw/lib/qt4/plugins:/run/current-system/sw/lib/kde4/plugins
```