bug#22629: “Stable” branch

[Konrad Hinsen]

Hi Ludo,

> I just had a bright idea (yes!): this can be addressed by writing
> something like this in ~/.config/guix/channels.scm:
>
>   (map latest-commit-with-substitutes-available
>        %default-channels)
>
> The hypothetical ‘latest-commit-with-substitutes-available’ would use
> (git) and (guix ci) to find the latest commit for which substitutes of
> interest are available, and would return:

I really like that idea, but it's a pity to limit it to channels.
Two scenarii I'd like to see covered are:

 1) Find the latest commit with all substitutes required by a given
    manifest.

 2) Find the latest commit with all substitutes required for updating a
    given profile.

This is in fact only one problem with two user interfaces.

Konrad.