From: Andreas Enge <andreas@enge.fr>
To: bug-guix@gnu.org
Subject: Rollback problems
Date: Wed, 23 Jan 2013 21:48:46 +0100 [thread overview]
Message-ID: <201301232148.46744.andreas@enge.fr> (raw)
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Rollback does not quite work as expected for me. I am starting without
.guix-profile in the home directory, and an empty directory
$PREFIX/var/nix/profiles/per-user/$USER (which I will shorten to $PERUSER
in the following).
$ guix-package -i hello
This creates a link $HOME/.guix-profile to $PERUSER/guix-profile; the
latter points to the newly created $PERUSER/guix-profile-1-link
$ guix-package --roll-back
error: no previous profile; not rolling back
No links are changed. I think in this case, rollback should create the
"empty profile" and have $PERUSER/guix-profile-1-link point to it.
Alternatively, the empty profile could be created in the beginning, so that
installing hello would actually create profile number 2. (I think this
would be the cleanest solution: Upon creation of $HOME/.guix-profile and
$PERUSER/guix-profile, create a first empty profile $PERUSER/guix-
profile-1-link, and the rollback code could stay the same.)
$ guix-package -i freetype
This creates $PERUSER/guix-profile-2-link and updates the links as
expected.
$ guix-package --roll-back
switching from generation 2 to 1
Unexpectedly, $PERUSER/guix-profile-2-link is not deleted, but
$PERUSER/guix-profile now points to $PERUSER/guix-profile-1-link. But we
need to delete the second profile link, as shown by the following:
$ guix-package -i file
Now $PERUSER/guix-profile-3-link is created, pointing to an environment
containing hello and file.
$ guix-package --roll-back
switching from generation 3 to 2
Now, we go back to generation 2, containing hello and the mysteriously
reappeared freetype.
Andreas
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next reply other threads:[~2013-01-23 20:49 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-23 20:48 Andreas Enge [this message]
2013-01-23 22:58 ` Rollback problems Ludovic Courtès
2013-01-23 23:17 ` Andreas Enge
2013-01-24 11:34 ` Ludovic Courtès
2013-01-24 15:33 ` Alex Sassmannshausen
2013-01-24 15:59 ` Ludovic Courtès
2013-01-24 20:52 ` Ludovic Courtès
2013-01-25 2:44 ` Nikita Karetnikov
2013-01-25 13:54 ` Alex Sassmannshausen
2013-01-25 14:48 ` Andreas Enge
2013-01-25 14:53 ` Ludovic Courtès
2013-01-27 17:05 ` Ludovic Courtès
2013-01-28 22:10 ` Andreas Enge
2013-01-28 22:44 ` Ludovic Courtès
2013-01-25 3:08 ` Nikita Karetnikov
2013-01-27 17:06 ` Ludovic Courtès
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