Arch Linux

Description:

pcsclite has a built-in 'filter' feature that allows to filter
if a reader get ignored/extended via two environment variables

This feature is enabled if '--enable-filter' is added during the
configuration, which is unfortunately not the case on Archlinux

This is useful e.G. if one has two crypto card, one used as a PIV
card for Firefox and a Nitrokey for GPG. If the Nitrokey is not
filtered out, Firefox will lock it in PIV mode and make gnupg
unable to access it.

Additional info:
* Package Version: pcsclite-1.8.18-1

Steps to reproduce:
('Nitrokey' can be replaced by any other model/vendor)
- Install pcsclite
- Add to /etc/systemd/system/pcscd.service.d/override.conf:
```
[Service]
Environment=PCSCLITE_FILTER_IGNORE_READER_NAMES=Nitrokey
```
- Start the pcscd service (after a systemctl daemon-reload)
- Connect a Nitrokey
- Run pcsc_scan: The Nitrokey is detected, while it should not
have been