mitchellh/vagrant — pull request #1142 by pbrisbin (2012-09-18 23:45:19+00:00)
Title: Fix arch host class

1. Detect os by /etc/os-release
2. Bring nfs_cleanup from parent class
3. Use systemd if available

I also had to re-implement `#nfs?` but I'm not really sure why.

This PR obviates #1081. I've not seen any of the issues I mention there with this approach.