Subject: [bug#47989] [PATCH] channels: Add a #:system argument to channel-instances->manifest.

From: Ludovic Courtès <[email-masked]>
Date: Tue, 11 May 2021 10:48:35 +0200

Hi,

Christopher Baines <[email-masked]> skribis:

> Yep, the Guix Data Service currently uses channel-instances->manifest to
> compute the channel instance derivations (which show up here for example
> [1]. Currently it computes the derivations for different systems by
> setting %current-system, but this has the side effect of also running
> the Guile code for computing the derivation with Guile for that system.
>
> 1: https://data.guix.gnu.org/revision/afec2784174058fdd85d9698e1fa748c45bfa8ee/channel-instances

I see, that’s because you explicitly want to channel derivations for
several systems in this case.  Got it!

Ludo’.