Thanks Elais. This is exactly what I need. Also you're right regarding the ISO running out of space (memory) as I ran =guix pull= once before the store was setup and mounted on the target system.
Also pinning the channels is useful to get "identical" os installed across the machines. This might be a neat code excerpt and note in the manual perhaps. Would you agree? Of course, once the system is setup then there is =guix deploy=. ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Friday, July 30th, 2021 at 6:15 PM, Elais Player <el...@fastmail.com> wrote: > You could add the custom channels file as an > > =extra-special-file=1 in the =os-configuration=. > > It would look something like this: > > #+BEGIN_SRC scheme > > (define %my-installation-os > > (operating-system > > (inherit installation-os) > > (services > > (cons* > > (extra-special-file > > "/etc/guix/channels.scm" > > (local-file "/path/to/my/channels.scm")) > > (operating-system-services installation-os))))) > > #+END_SRC > > Plus side is you now have a global channels file from which all > > you need to do is run =guix pull= to have all your channels up to > > date. You may also want to pin those channels to certain commits > > just in case. Down side is running =guix pull= will start filling > > up your disk or memory on an ISO and you can easily run out of > > space. (I would advise not running =guix pull= until after > > partitioning and setting up the target system), and this file will > > be added to the store (but if you're creating a channels file in > > =/etc= shouldn't matter honestly). > > phodina via help-guix@gnu.org writes: > > > Hello, > > > > I'm migrating to a newer machine and I'm taking my GuixSD > > > > configuration with me. > > > > So the first logical step I did was to create an ISO image based > > > > on this section 1. As I use my custom channel with modified > > > > packages I added them to the configuration to make them > > > > available on the new machine. > > > > Or so I thought. I booted and partitioned the new machine then > > > > ran > > > > guix system init /root/configurations.scm /mnt to install Guix > > > > there. > > > > However, after reboot turns out that the packages are not from > > > > my channel but from public Guix repository without > > > > modifications. > > > > Therefore my question is if it's possible to specify also > > > > channels in the configuration file so that they are used during > > > > installation? > > > > Reading the manual I came to a nice command guix system describe > > > > 2 which gives me the current configuration with the > > > > channels. Could that be used to build an ISO which would then > > > > also know about the additional channels? > > > > Kind regards > > > > Petr
