There is nothing in this commit except for the changes made by
nix-shell -p nixfmt-rfc-style --run "nixfmt ."
If this has mucked up your open branches then sorry about that. You
can probably nixfmt them to match before merging
* [] is now [ ]
* {} is now { }
* commas in arglists go at end of line not beginning
In short, I ran the whole thing through nixfmt-rfc-style but only
accepted about 30% of its changes. I might grow accustomed to more
of it over time
sshd expects there to be space in /persist/secrets that it can
use to write host keys, but when we make ext4fs images we don't
put any free space in them
It will probably work fine for USB-stick boot (except in the case
where there is > 1 usb device plugged in, so maybe don't do that)
It doesn't matter for TFTP boot because boot.scr overrides the root=
param anyway
