Felix,

> Please save the snippet below as services/redshift.scm and 'load' in
> your home configuration like this
> 
>   (services
>    (list
>     (load "service/redshift.scm")))

Thanks!

Should the `services/redshift.scm` be in same directory as 
'home-config.scm'?

> * * *
> 
> (use-modules
>   (gnu home services desktop))
> 
> (service home-redshift-service-type
>           (home-redshift-configuration
>            (location-provider 'manual)
>            ;; Fremont, Calif.
>            (latitude 37.5)
>            (longitude -122.0)))

Also, how would this be different from adding `(service 
home-redshift-service-type)` directly in home configuration?

Regards,
RG.