Re: Tip of the day: storing your GuixSD config in the instantiated system

[Alex Kost <alezost@gmail.com>]

Ludovic Courtès (2017-08-28 14:04 +0200) wrote:

> Hi Mekeor,
>
> (I think you forgot to Cc: the list.)
>
> Mekeor Melire <mekeor.melire@gmail.com> skribis:
>
>> Ludovic Courtès <ludo@gnu.org> writes:
>>
>>> Hello Guix!
>>>
>>> Following a discussion we had at the GHM today, here’s the tip of the
>>> day!
>>
>> Greetings to everyone at GHM!
>>
>>> But wait: we can already store the config file in the instantiated
>>> system!  Here’s how:
>>>
>>>   (operating-system
>>>     ;; …
>>>     (services (cons (simple-service 'store-my-config
>>>                                     etc-service-type
>>>                                     `(("config.scm"
>>>                                        ,(local-file (assoc-ref
>>>                                                      (current-source-location)
>>>                                                      'filename)))))
>>>                     …)))
>>>
>>> You instantiate that, and then /etc/config.scm (aka.
>>> /run/current-system/etc/config.scm,
>>> aka. /var/guix/profiles/system/etc/config.scm) contains the config file.
>>
>> Because of the frequent demand for it, I think it would make sense to
>> offer this as pre-defined service by default, as part of Guix itself.
>> What do you think?

I was going to write the same: I also think it would be good to make
this service the default one, so that we can always point a user to the
system config the current system was reconfigured with.

-- 
Alex