Bug#815786: d-i does not ask for hostname

[Martin Michlmayr <tbm@cyrius.com>]

* Roger Shimizu <rogershimizu@gmail.com> [2016-02-25 18:59]:
> the code in:
>   http://anonscm.debian.org/cgit/d-i/oldsys-preseed.git/tree/oldsys-preseed
> Line: 291
>   HOSTNAME=$(grep "Server Name" $path/sda1/.config/uLinux.conf | sed 's/^.* //')
> 
> hostname get from there, and d-i won't really set up $HOSTNAME?

We read the hostname and store it as $HOSTNAME but then we do:

add "$FILE" "netcfg/get_hostname" "string" "debian"

I guess this should be $HOSTNAME (if set) or "debian".  But I'm not
sure that's even worth fixing now.

> I guess hostname should be set by the Line 293:
>   unset_matching_var "HOSTNAME" NAS$(echo "$MAC" | sed
> 's/^..:..:..://' | sed 's/://g')
> 
> There're several calling to "unset_matching_var" for other devices in
> that script, so if it's not working, it should be a bug to report.

What unset_matching_var does it to unset a variable if it has a
particular value.  This is because we don't want to use values that
are the default values.  i.e. only take the value if the user has
personally chosen something.

-- 
Martin Michlmayr
http://www.cyrius.com/