Just wanted to share the following:
This is my setup for sharing GUIX from the host with running VMs. GUIX
can be mounted read-only and it is similar to Ricardo's setup on an
HPC compute cluster: http://elephly.net/posts/2015-04-17-gnu-guix.html
Sharing Guix with host and KVM, start up the VM with something like
qemu-system-x86_64 -enable-kvm -hda hda.img \
-m 1024M \
-smp 2 \
-redir tcp:2222::22 \
-fsdev local,security_model=passthrough,id=fsdev0,path=/gnu \
-device virtio-9p-pci,id=fs0,fsdev=fsdev0,mount_tag=gnu \
-fsdev local,security_model=passthrough,id=fsdev1,path=/var/guix \
-device virtio-9p-pci,id=fs1,fsdev=fsdev1,mount_tag=guix
Mount guix directories inside KVM
ssh -p 2222 localhost
as root:
mkdir /gnu
mkdir /var/guix
mount -t 9p -o trans=virtio,version=9p2000.L gnu /gnu
mount -t 9p -o trans=virtio,version=9p2000.L guix /var/guix
Now we have GNU Guix visible. Create the root profile - which will
match that on the host
ln -sf /var/guix/profiles/per-user/root/guix-profile \
/root/.guix-profile
The same for other users that need to access a profile, e.g., as a
user
ln -sf /var/guix/profiles/per-user/$USER/guix-profile \
$HOME/.guix-profile
The only catch (really) is that all software has to be installed on
the host (which has a running guix-daemon) and VM users need to have a
matching host profile.
Pj.
