[bug#56618] [PATCH 0/2] Let 'guix gc -d' delete old Home generations

[Ludovic Courtès]

Hi,

Andrew Tropin <andrew@trop.in> skribis:

> BTW, a little offtopic (related to gc, but not related to these changes)
> problem I have, which is very annoying: After guix gc, guix home
> rebuilds/redownloads a lot of stuff.  The configuration and channels are
> absolutely the same.
>
> guix home reconfigure home-configs.scm # builds/downloads a lot of stuff
> guix gc
> guix home reconfigure home-configs.scm # do everything again
>
> Am I missing something and it is expected behavior or is it a bug?

It’s an expected annoyance: to determine whether a graft needs to be
applied, we first need to download/build the ungrafted variant, which is
why you’re seeing this (this is worsened by the fact that many packages
are candidates for grafting currently on ‘master’).

Ludo’.