bug#23838: Guix on Debian 8.3 'guix system vm ...' -> "ERROR: qemu failed "qemu-system-x86_64"

[myglc2]

myglc2 <address@hidden> writes:

> address@hidden (Ludovic Courtès) writes:
>>
>> Usually, /dev/kvm is has “kvm” as its group and is group-writable.  So
>> all you need is to add the guixbuild* users to the “kvm” group.
>
> Thank you, so I did this ...
>
> adduser guixbuilder1 kvm
...
>
> ... anyway, now I get ...
>
> address@hidden:~/dev/vms$ guix system vm ../configs/c01system.scm 
> --expose=$HOME --share=$HOME/tmp=/exchange --verbosity=1
> substitute: warning: failed to install locale: Invalid argument
> /gnu/store/7rv558c43bwnmmkc85izv1b69ards5qy-run-vm.sh
> address@hidden:~/dev/vms$ 
> /gnu/store/7rv558c43bwnmmkc85izv1b69ards5qy-run-vm.sh
> qemu-system-x86_64: -virtfs 
> local,path=/home/g1/tmp,security_model=none,mount_tag=TAG_home_g1_tmp: 9pfs 
> Failed to initialize fs-driver with id:TAG_home_g1_tmp and export 
> path:/home/g1/tmp
> address@hidden:~/dev/vms$

OOH! DUH! Nevermind ...

mkdir /home/g1/tmp

... fixes this.