bug#20024: grub store is not copied to target system

[Tomas Cech]

On Mon, Mar 09, 2015 at 09:05:37AM +0100, Ludovic Courtès wrote:
> Tomáš Čech <address@hidden> skribis:
>
> > On Sun, Mar 08, 2015 at 10:49:37PM +0100, Ludovic Courtès wrote:
> > > address@hidden skribis:
> > >
> > > > With guix at revision df81e046c57e5f767738113e4e7a28b212c03d63 I tried
> > > > to deploy Guix to another partition.
> > >
> > > Do you mean that you wanted to use a different root partition than the
> > > one that was being used?
> >
> > Yes. I am running from my Gentoo `guix system init -c 3 /guix' where /guix is
> > different partition planned to be booted as root filesystem for GuixSD.
>
> OK.
>
> > > > Result system installed Grub into partition but did not copied it's
> > > > store to /gnu/store/ on target partition.
> > >
> > > Indeed, ‘guix system reconfigure’ assumes that the root partition
> > > remains the same and does not try to copy the store.
> >
> > I'm runnning `guix system init' though.
>
> Yeah your expectations for ‘guix system reconfigure’ were too high I
> guess.  ;-)

I'm afraid that I don't understand the relation between `guix system init' and
`guix system reconfigure' you insist on. My understanding was, that `guix
system init' will create new system in subdirectory as it is described in
manual (6.1.4 Proceeding with the Installation).

> Seriously, I don’t think we’d want it to automagically migrate the
> store.

How does it differ from building new VM image?

> Maybe it could check whether the root partition in the OS declaration is
> the same as the one that holds the current store, but I’m not sure if
> that can be done reliably.  Thoughts?

Again, I'm afraid we misunderstood each other.

One thing is that you can expose it to configuration and let user configure it
correctly. I was already thinking that I'm wasting disk space with two copies
of /gnu/store on my computer (on Gentoo and on GuixSD).

I may sound like Cpt. Obvious here, but you can also be sure that store is
elsewhere if you need to create /gnu/store directory...

And also note that it worked for me for every package but grub. My opinion is
that grub binaries are not part of %base-packages or similar package set and
noone noticed until now because grub was installed from different
distribution.

I hope I made it a bit more clear now.

Best regards and thanks,

S_W

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