Marius Bakke <mbakke@fastmail.com> writes:

> As a workaround you can try e.g. 'GROUP+="gpg", MODE=”0660″'.

I tried your suggestion but then `dmesg | grep udevd` rightfully
complained that the "gpg" group did not exist.
Am I supposed to create it?

Anyways, I tried with 'GROUP+="users", MODE=”0666″', but it did not work either.

> I suspect you may also need 'pcscd' which we currently don't have a
> service for.

The Nitrokey is a PGP key I believe. According to Arch Wiki
(https://wiki.archlinux.org/index.php/GnuPG#GnuPG_with_pcscd_.28PCSC_Lite.29),
if it were the issue I should see an error like

> gpg: selecting openpgp failed: ec=6.108

I also tried to install libusb-compat in my operating system package
selection as suggested by Arch Wiki, to no avail.

Any clue?  Otherwise I'll ask Nitrokey.