Currently you can't. The OS type is queried over ssh from the running
VM and gentoo64 is not detected.
You'd need to change Vagrants' source to do this so I suppose you
could open a feature request.
There is some debate about what is the least fault prone -
configuration vs interrogation.
HTH
> ---
> The history of this issue:
> * I install gentoo64 VM on windows 7 32 bit host OS installed on 64
> bit host machine
> * `vagrant add` goes ok
> * `vagrant up` waits in endless loop, because VirtualBox's assumption
> for guest's OS type is gentoo, not gentoo46 and so VM does not launch
> * when I setup OS type to gentoo64 via VirtualBox GUI vagrant up
> succeed in launching virtual VM
>
--
πόλλ' οἶδ ἀλώπηξ, ἀλλ' ἐχῖνος ἓν μέγα
[The fox knows many things, but the hedgehog knows one big thing.]
Archilochus, Greek poet (c. 680 BC – c. 645 BC)
http://hedgehogshiatus.com
I think this should explain why:
https://github.com/mitchellh/vagrant/blob/master/lib/vagrant/systems/linux.rb#L14
Again, I think if you want this addressed you'll need to open a issue?
HTH