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Subject: [bug#35648] [PATCH] services: Add 'nix-service-type'.
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From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
References: <20190509122951.9119-1-go.wigust@gmail.com>
Date: Sat, 01 Jun 2019 15:26:13 +0200
In-Reply-To: <20190509122951.9119-1-go.wigust@gmail.com> (Oleg Pykhalov's
	message of "Thu, 9 May 2019 15:29:51 +0300")
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To: Oleg Pykhalov <go.wigust@gmail.com>
Cc: 35648@debbugs.gnu.org

Hi Oleg,

Oleg Pykhalov <go.wigust@gmail.com> skribis:

> * gnu/services/nix.scm: New file.
> * gnu/local.mk: Add this.
> * doc/guix.texi (Miscellaneous Services): Document this.

[...]

> +@defvr {Scheme Variable} nix-service-type
> +
> +This is the type of the service that runs @url{https://nixos.org/nix/, N=
ix}, a
> +daemon that is required to use the Nix package manager.

=E2=80=9C=E2=80=A6 that runs the build daemon of the @url{https://nixos.org=
/nix, Nix}
package manager.  Here is an example showing how to use it:=E2=80=9D

> +@example
> +(use-modules (gnu))
> +(use-service-modules nix)
> +(use-package-modules package-management)
> +
> +(operating-system

Add a line like:

  ;; @dots{}

> +  (packages (append (list nix)
> +                    %base-packages))
> +
> +  (services (append (list (service nix-service-type))
> +                    %base-services)))
> +@end example
> +
> +After @command{guix system reconfigure} you need to configure Nix for yo=
ur
> +user, e.g.:
> +
> +@example
> +$ nix-channel --add https://nixos.org/channels/nixpkgs-unstable
> +$ nix-channel --update
> +$ ln -s "/nix/var/nix/profiles/per-user/$USER/profile" ~/.nix-profile
> +$ source /run/current-system/profile/etc/profile.d/nix.sh
> +$ nix-env --install hello
> +$ hello
> +@end example

Can we instead simply add a link to upstream documentation for this?  I
would feel more comfortable that way.

Otherwise LGTM, thanks!

Ludo=E2=80=99.