hardcoded system-specific NetworkManager path
Running pipenv run liberty tunnel-setup
on Arch prompts me for my username and password, but then fails with "gi.repository.GLib.Error: nm-vpn-plugin-error-quark: cannot load plugin "/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-vpn-plugin-openvpn.so": /usr/lib/x86_64-linux-gnu/NetworkManager/libnm-vpn-plugin-openvpn.so: cannot open shared object file: No such file or directory".
I do however have what looks like the missing object file at the path /usr/lib/NetworkManager/libnm-vpn-plugin-openvpn.so
(which is installed on Arch by the networkmanager-openvpn
package). Looks like the path might differ between distributions.