Re: Trouble configuring guix

[Julien Lepiller]

Looking at the manual, I tgink this is the issue. sddm-configuration is a 
record type that has a field called xorg-configuration. This field expects a 
record of type xorg-configuration, but you pass it a keyboard configuration 
instead. I think this is what you need to do:

(sddm-configuration
  …
  (xorg-configuration
    (xorg-configuration
      (keyboard-layout %this-keyboard))))

HTH!

On February 20, 2022 1:33:49 AM GMT+01:00, "Cássio Tavares" 
<cassio.ufg@gmail.com> wrote:
>Hello there!
>
>Well, I need help...
>
>## Context:
>
>  * I have just a little familiarity with Guile Scheme, because I'm a
>    LilyPond user;
>  * I finally have a desktop that doesn't need non-libre drivers;
>  * Although I'm not in the Tech world, I love GNU's (and the FSF's)
>    philosophy;
>  * I have been playing with Nix, but find it very cryptic -- not easy
>    to understand at all.
>
>  So, Guix seems to be the path I'm on now.
>
>## Situation:
>
>  I have several problems to fix, but the most important right now is
>  to get my keyboard to work with sddm, and I need sddm for
>  Wayland. So, without sddm, this works:
>
>```
>    ...
>
>    (define %this-keyboard  (keyboard-layout "br" "abnt2"))
>
>    ...
>
>    (operating-system
>      ...
>
>      (keyboard-layout  %this-keyboard)
>
>      ... )
>
>```
>
>  But `guix system reconfigure /etc/config.scm` fails when this is this:
>
>```
>    (use-modules
>      (gnu)
>      (gnu system nss)
>      (gnu services networking)
>      (gnu services sddm)
>      (gnu services cups)
>      (gnu services desktop)
>      (gnu services ssh)
>      (gnu services xorg))
>
>    ...
>
>    (define %this-keyboard (keyboard-layout  "br" "abnt2"))
>
>    ...
>
>    (operating-system
>      ...
>
>      (keyboard-layout  %this-keyboard)
>
>      ...
>
>      (services
>        (append
>          (list
>            (service dhcp-client-service-type)
>            (service ntp-service-type)
>            (service gpm-service-type)
>            (service cups-service-type)
>            (service elogind-service-type)
>            (service sddm-service-type
>              (sddm-configuration
>                (display-server "wayland")
>                (numlock "on")
>                (theme "guix-simplyblack-sddm-theme")
>                (xorg-configuration
>                  (keyboard-layout %this-keyboard)))))
>          %base-services))
>
>      ... )
>
>```
>
>  Then, when I try to run `guix system reconfigure /etc/config.scm`, I
>  get this backtrace:
>
>> root@udu ~#
>  > Backtrace:
>  >           19 (primitive-load "/root/.config/guix/current/bin/guix")
>  > In guix/ui.scm:
>  >    2229:7 18 (run-guix . _)
>  >   2192:10 17 (run-guix-command _ . _)
>  > In ice-9/boot-9.scm:
>  >   1752:10 16 (with-exception-handler _ _ #:unwind? _ # _)
>  > In guix/status.scm:
>  >     829:3 15 (_)
>  >     809:4 14 (call-with-status-report _ _)
>  > In guix/scripts/system.scm:
>  >    1256:4 13 (_)
>  > In ice-9/boot-9.scm:
>  >   1752:10 12 (with-exception-handler _ _ #:unwind? _ # _)
>  > In guix/store.scm:
>  >    658:37 11 (thunk)
>  >    1320:8 10 (call-with-build-handler #<procedure 7faf357d0060 at g…> …)
>  >   2129:25  9 (run-with-store #<store-connection 256.99 7faf38008190> …)
>  > In guix/scripts/system.scm:
>  >     827:2  8 (_ _)
>  >     703:8  7 (_ #<store-connection 256.99 7faf38008190>)
>  > In gnu/system.scm:
>  >   1227:19  6 (operating-system-derivation _)
>  >    748:11  5 (operating-system-services #<<operating-system> kernel:…>)
>  >    782:20  4 (services _)
>  > In /etc/config.scm:
>  >    185:14  3 (services #<<operating-system> kernel: #<package linux-…>)
>  >    185:14  2 (services #<<keyboard-layout> name: "br" variant: "abnt…>)
>  > In ice-9/boot-9.scm:
>  >   1685:16  1 (raise-exception _ #:continuable? _)
>  >   1685:16  0 (raise-exception _ #:continuable? _)
>  >
>  > ice-9/boot-9.scm:1685:16: In procedure raise-exception:
>  > Wrong type to apply: #<<keyboard-layout> name: "br" variant:
>"abnt2" model: #f options: ()>
>
>## Conclusion:
>
>  Two things tell me that the problem is really in the keyboard
>  configuration within the configuration of the sddm service:
>
>  * When I remove the `xorg-configuration` from the `sddm-configuration`,
>    the reconfiguration returns no error, and the sddm service works
>    normally.
>  * And in this setup, the keyboard works on the console, just not on the
>    desktop environment.
>
>Best regards,
>And thank you.
>
>Cassio
>