[bug#57070] [PATCH] bootloader: extlinux: support for optional FDTDIR

[Pavel Shlyak]

Maxime, how is your information about pantherx related to the patch? This patch 
in question makes guix bootloader config more flexible with the perspective of 
supporting additional hardware. It doesn’t rely on any component of pantherx, 
thus I am not sure it’s the right place to discuss that.

As for the tests, I ran the image on a non-guix arm machine and I doubt it’s 
possible or makes sense to run a VM during tests phase. That would require much 
effort and probably hardware support for virtualization (that’s not present on 
many relevant machines). I believe a simple test like checking if the line is 
present in a newly generated extlinux.conf would have more sense.

Sincerely,
Pavel