Hi!
Leo Famulari <[email protected]> skribis:
> As you found, what you get with `guix system vm` is read-only. Even
> though you copied build-vm.sh out of /gnu/store, it is just a shell
> script that refers to immutable data in the host /gnu/store.
>
> In order to share the store with a VM, you would need to also share the
> store database — at least /var/guix/db if not all of /var/guix — and
> also use the host's guix-daemon.
>
> It would be great to support your use case but I don't think anyone has
> worked on it yet.
Unfortunately, the Unix-domain socket in /var/guix/daemon-socket cannot
be shared over 9p AFAICS (with ‘guix system vm --expose’).
However, one thing that could work is to:
1. in the guest, set GUIX_DAEMON_SOCKET=guix://localhost:1234;
2. set up QEMU port forwarding such that the guest’s port 1234 is
somehow redirected to a port the host guix-daemon listens to (with
‘--listen’);
3. share /var/guix with the guest.
It would be easier if Unix-domain sockets could be forwarded between the
host and the guest, but that doesn’t seem to be the case. :-/
Ludo’.
