Re: Delete all previous derivations

[Joey Dumont <joey.dumont@gmail.com>]

I was toying around the idea of having guix as a compatibility layer for an
HPC software stack, similar to what Compute Canada had with nix before they
switched to Gentoo (
http://users.ugent.be/~kehoste/eum18/easybuild_nix_cvmfs_compute_canada_bart_oldeman.pdf),
hence the weird setup. I am aware that the Guix HPC guys recently published
a layer between modules and guix shell, which I find interesting.

It took a little while to try your command, as I built guix using Arch's
package manager, which doesn't install pre-inst-env. Also, I built in a
chroot, and pre-inst-env contains hard-coded references to the build
directory. I guess I am a very weird user :)

But even with that I still get the same errors. I don't want to keep the
two stores simultaneously, I'm fine with fully destroying the old one
(although I would be interested in knowing how to properly rollover from
one store to another).

Thanks!

Joey Dumont (Profile <http://blog.joey-dumont.ca/>)
The supreme elegance of Nature lies in its apparent simplicity.


On Fri, 29 Apr 2022 at 12:57, zimoun <zimon.toutoune@gmail.com> wrote:

> Hi,
>
> On Fri, 08 Apr 2022 at 23:14, Joey Dumont <joey.dumont@gmail.com> wrote:
>
> > I am using guix on Arch Linux, installed through the AUR package, but
> with
> > a custom store directory: --with-store-dir=/cvmfs/
> soft.valandil.ca/2022.03.
> > I was running the daemon with options:
> >
> > # /etc/systemd/system/guix-daemon.service.d/override.conf
> > [Service]
> > ExecStart=
> > ExecStart=/usr/bin/guix-daemon --build-users-group=guixbuild
> > --gc-keep-outputs=yes --gc-keep-derivations=yes
> >
> > I have since updated my guix install to point to a new store: /cvmfs/
> > soft.valandil.ca/2022.04, but I keep getting errors when running guix
> pull:
>
> Hum, interesting setup… but then Guix will be confused, I guess.
>
> > $ guix pull
> > ;;; WARNING: loading compiled file
> /usr/lib/guile/2.2/site-ccache/gnutls.go
> > failed:
> > ;;; In procedure load-thunk-from-file: Invalid argument
> > ;;; WARNING: loading compiled file
> /usr/lib/guile/2.2/site-ccache/gnutls.go
> > failed:
> > ;;; In procedure load-thunk-from-file: Invalid argument
> > Updating channel 'guix-hpc' from Git repository at '
> > https://gitlab.inria.fr/guix-hpc/guix-hpc'...
> > Updating channel 'guix' from Git repository at '
> > https://git.savannah.gnu.org/git/guix.git'...
> > Authenticating channel 'guix', commits 9edb3f6 to 1d4f2cd (23 new
> > commits)...
> > Building from these channels:
> >   guix      https://git.savannah.gnu.org/git/guix.git 1d4f2cd
> >   guix-hpc  https://gitlab.inria.fr/guix-hpc/guix-hpc de22a12
> > guix pull: error: derivation `/cvmfs/
> >
> soft.valandil.ca/2022.03/compat/x86_64/linux/pf4z6hc1f9bwddsravnlacnb2i8p9xyl-guile-3.0.2.tar.xz.drv
> '
> > has incorrect output `/cvmfs/
> >
> soft.valandil.ca/2022.04/compat/x86_64/linux/92ip5misld973bsm73hfazwmd4n9d58z-guile-3.0.2.tar.xz
> ',
> > should be `/cvmfs/
> >
> soft.valandil.ca/2022.03/compat/x86_64/linux/9gc2alnhkrilqdch2xzjg0vq9b44is43-guile-3.0.2.tar.xz
> > '
>
> Ah, Guix is really confused. :-)
>
> > I tried stracing the guix pull, and deleted all cache entries I could,
> > ~/.cache/{guile,guix}, and the previous store, but the error persists.
> > Where is that derivation stored so that it can be compared against the
> new
> > derivation? How can I delete it?
>
> IIUC, you have 2 stores.  It means now you have 2 SQLite databases and
> so on.  Well, I do not know how it can work.
>
> You pulled with the old store.  So the current guix command points to an
> item to this old store.  To change the store location
> (--with-store-dir), you have recompiled Guix, right?
>
> Then, did you run
>
>     ./pre-inst-env guix pull -p ~/.config/guix/current
>     ~/.config/guix/current/bin/guix pull
>
> ?
>
>
> Cheers,
> simon
>