After correcting the requirements as per #421, I've continued with the vagrant installation instructions.
I'm getting the following error about permissions installing wcwidth:
https://gist.github.com/sbenthall/a21990cd57a1e83fbb5650425d7617fe
I'm a bit confused about the error because I'm assuming the dependencies are being installed on a virtual machine, and that the roundware user would have permissions to do the install....