bug#45992: A "live" profile is missing

[Leo Famulari]

On Mon, Jan 25, 2021 at 09:55:09PM +0100, Ludovic Courtès wrote:
> > $ guix gc --list-live
> > finding garbage collector roots...
> > skipping invalid root from 
> > `/var/guix/profiles/per-user/root/guix-profile-197-link' to 
> > `/gnu/store/1ph7vxq4hhqr1hjkmgin16p1cqx3v904-profile'
> 
> That means the target of this symlink was already invalid/non-existent,
> right?

Right, that store item did not exist.

> If there’s a root pointing to the profile, and the profile no longer
> exists, it could be that the root was created after the profile had been
> deleted.  AFAIK that cannot happen in normal operation, so you’d really
> have to fiddle with /var/guix/profiles to achieve that.
> 
> So… I don’t see how this could happen!

Mysterious...