Specify --no-parallel flag inside Vagrantfile

Question

According to the documentation http://docs.vagrantup.com/v2/cli/up.html vagrant up has optional parameter --no-parallel

Is it possible to specify this flag inside of Vagrantfile or at least warn user if it's not specified?

Answer 1

Got an answer from original repo environment test suite:

ENV['VAGRANT_NO_PARALLEL'] = 'yes'

Edit:

Well, unfortunately, I have to say It's not an option. Seems like option works for env, where vagrant is launched, but not in Vagrantfile

$ VAGRANT_NO_PARALLEL=yes vagrant up - works

$ vagrant up with Vagrantfile containint VAGRANT_NO_PARALLEL - fails