Currently installing Ironwood and Juniper (and probably earlier versions) is broken, because the py2neo authors decided to remove the installable packages of the versions we were using.
The fix for master is here: fix: use github version of py2neo by fredsmith · Pull Request #27168 · edx/edx-platform · GitHub. This has been applied to Koa, but is not a simple cherry-pick onto older branches.
It would be a great service to the community to create pull requests for
open-release/juniper.master, and test that they are fixed. Anyone looking for a straightforward contribution to make?