Support updating wifi from /boot

[jedahan]

With the migration to networkmanager, we lost the ability to easily update wifi credentials by mounting /boot/ and writing a wpa_supplicant.conf file.

I'd like to bring this back in whatever the most appropriate manner.

Was thinking of just adding mv /boot/*.nmconnection /etc/NetworkManager/system-connections to firstrun.sh, but wanted to start a small discussion to make sure this is the best way for the rpi team and community first.

[jedahan]

The other option I see relates to cloud-init, which supports updates: clauses for running "per-boot" instead of first boot, but I am not sure how that integrations works with rpi.

[jedahan]

See previous discussion on RPi-Distro/raspberrypi-sys-mods#82

[XECDesign]

I don't think this is the right repo for this. This is all very specific to raspberry pi os and none of this functionality was ever provided by rpi-imager itself.

[jedahan]

Yeah, it’s a bit hard to find where raspberry pi OS actually defines firstboot.sh - should I open in pi-gen or is there another location?

[lurch]

See the discussion in raspberrypi/bookworm-feedback#72