[Aptitude-devel] Bug#964916: Option to allow packages from backports but without forcing it

[Antoine]

On Sun, 12 Jul 2020 15:23:28 +0200 (CEST) Thorsten Glaser <t.glaser at tarent.de> wrote:
> But the installability problem has a different cause:
> 
> […]
>           Depends: ruby-faraday (>= 0.17.3~) but 0.15.4-3~bpo10+1 is to be installed
> […]
> $ apt-cache policy ruby-faraday
> ruby-faraday:
>   Installed: (none)
>   Candidate: 0.13.1-2
>   Version table:
>      0.15.4-3~bpo10+1 100
>         100 http://mirror.lan.tarent.de/debian buster-backports/main amd64 Packages
>      0.13.1-2 500
>         500 http://mirror.lan.tarent.de/debian buster/main amd64 Packages
>      0.9.2-3 500

The required ≥ 0.17.3~ version is actually provided by the `buster-backorts` branch of the `https://fasttrack.debian.net/debian` repository:

$ apt-cache policy ruby-faraday
ruby-faraday:
  Installé : 0.17.3-1~bpo10+1
  Candidat : 0.17.3-1~bpo10+1
 Table de version :
     0.17.3-1 100
        100 http://mirrors.digitalocean.com/debian bullseye/main amd64 Packages
 *** 0.17.3-1~bpo10+1 150
        150 https://fasttrack.debian.net/debian buster-backports/main amd64 Packages
        100 /var/lib/dpkg/status
     0.15.4-3~bpo10+1 200
        200 http://mirrors.digitalocean.com/debian buster-backports/main amd64 Packages
     0.13.1-2 500
        500 http://mirrors.digitalocean.com/debian buster/main amd64 Packages

The system this command result is copied from has been built following these instructions:
https://wiki.debian.org/gitlab#Buster_Fast_Track_.28Recommended.29

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