6.2 Uso de un canal de Guix personalizado

El canal llamado guix especifica de dónde debe descargarse el mismo Guix—sus herramientas de línea de órdenes y su colección de paquetes—. Por ejemplo, suponga que quiere actualizar de otra copia del repositorio Guix en example.org, y específicamente la rama super-hacks, para ello puede escribir en ~/.config/guix/channels.scm esta especificación:

;; Le dice a 'guix pull' que use mi propio repositorio.
(list (channel
        (name 'guix)
        (url "https://example.org/otro-guix.git")
        (branch "super-hacks")))

From there on, guix pull will fetch code from the super-hacks branch of the repository at example.org. The authentication concern is addressed below (see Verificación de canales).

Note that you can specify a local directory on the url field above if the channel that you intend to use resides on a local file system. However, in this case guix checks said directory for ownership before any further processing. This means that if the user is not the directory owner, but wants to use it as their default, they will then need to set it as a safe directory in their global git configuration file. Otherwise, guix will refuse to even read it. Supposing your system-wide local directory is at /src/guix.git, you would then create a git configuration file at ~/.gitconfig with the following contents:

[safe]
        directory = /src/guix.git

This also applies to the root user unless when called with sudo by the directory owner.