Add and configure a print server for the Brother P-touch QL 500 label
printer, so that it can be easily used via SSH.
Do the following to make that work:
- Configure the print server host.
- Package printer-driver-ptouch to have a working driver for the label
printer.
- Configure CUPS.
- Add a script "forcecommand-lpr-wrapper", which works together with the
ForceCommand sshd_config option and wraps lpr to provide an easy
interface to use the Brother QL 500 label printer via SSH.
- Add a print user and configure SSH to have the
"forcecommand-lpr-wrapper" script accessible without a password using
the print user via SSH.
I think we used pkgs from unstable (as pkgs-unstable), because the Go
version in NixOS 23.05 was too old. But now that we're on 23.11, which
has a newer Go version, we can use pkgs from stable.
- use nqptp
- use Shairport Sync and nqptp versions, which work
- disable IPv6, since Shairport Sync doesn't work with it for some
reason
- configure firewall for AirPlay 2
- use correct subnet
