http://git.j8810kkw.i2p/j8810kkw/tube/commit/e6e49ca69de8c8a1e38b043169bd402c278fb42c
Don't touch unless you know what you're doing! VAGRANTFILE_API_VERSION = " 2 " # ugly hack to prevent hashicorp's bitrot. See https://github.com/hashicorp/vagrant/issues/9442 # this setting is required for pre-2.0 vagrant, but causes an error as of 2.0.3, # remove entirely when confident nobody uses vagrant 1.x for anything. unless Vagrant :: DEFAULT_SERVER_URL . frozen?