Re: hydra.gnu.org off-line for maintenance

[znavko]

Thank you, Ricardo! Your answer is very important.
This command is working now: 'guix system reconfigure /etc/config.scm --substitute-urls=https://mirror.guixsd.org', nevertheless I have 504 errors, but some packages are compiling now.
After that I'll try your advise. It's a pity I have not enough time for GuixSD and Guile, but this is very best I've tried from opensource. Here are very  responsive people. When I found how to use IRC through tor or vpn I'll join. 
But may be tox group chat?

31. Oct 2018 20:04 by address@hidden:

> Hi,
>
> address@hidden writes:
> > (define %my-services
> >  (modify-services %base-services
> >  (guix-service-type config =>
> >  (guix-configuration
> >  (inherit config)
> >  (substitute-urls (list "https://mirror.hydra.gnu.org <https://mirror.hydra.gnu.org>";
> >  "https://hydra.gnu.org <https://hydra.gnu.org>";
> >  "https://berlin.guixsd.org <https://berlin.guixsd.org>";
> >  ))))))
>
> Okay, %my-services is a list of services.  Let’s remember this.
> >  (services (cons* ;;(tor-service)
> >  (xfce-desktop-service)
> >  (bluetooth-service)
> >  (modify-services %desktop-services …)
> >  %my-services
> >  ));;end of services
>
> Here you’re using cons* on four arguments: a service, another service, a
> list of services, and yet another list of services.
>
> This is why you get the error, because you’re creating a nested list of
> services and lists of services.  When you pay attention to the types you
> could come up with an alternative, such as this:
>
> (services (cons* (xfce-desktop-service)
>                  (bluetooth-service)
>                  (append (modify-services %desktop-services …)
>                          %my-services)))
>
> Or you could change %my-services to work on %desktop-services and thus
> remove the second “modify-services”.
>
> --
> Ricardo
>
> PS: closing parentheses get lonely when they are on a line all by
> themselves ;)