Ludovic Courtès (2015-10-29 00:33 +0300) wrote:
> Hi Guix!
>
> A fairly common pattern in GuixSD is: You want to use whatever is in
> ‘%desktop-services’, say, but you want to tweak the configuration of
> some of the services in there.
>
> This is where the ‘modify-services’ macro comes in, inspired by Taylan’s
> ‘modify-phases’:
>
> Occasionally, instead of using the base services as is, you will want
> to customize them. For instance, to change the configuration of
> ‘guix-daemon’ and Mingetty (the console log-in), you may write the
> following instead of %BASE-SERVICES:
>
>(modify-services %base-services
> (guix-service-type config =>
> (guix-configuration
> (inherit config)
> (use-substitutes? #f)
> (extra-options '("--gc-keep-outputs"
> (mingetty-service-type config =>
> (mingetty-configuration
> (inherit config)
> (motd (plain-file "motd" "Hi there!")
>
> The effect here is to change the options passed to ‘guix-daemon’ when it
> is started, as well as the “message of the day” that appears when
> logging in at the console. *Note ‘modify-services’: Service Reference,
> for more on that.
>
> Simple but convenient, no?
This is awesome! Thank you!!
--
Alex
