I have also done a libgdx port of the same project. In both cases, I used a minimal framework (bare libgdx and bare löve2d) plus a minimal library to replace the missing functionality from Flixel. The challenge has been to get the port so far as it can actually be played with as little code as possible, specially in the library part.
All in all, this has been a very fun experiment. Specially since it have brought a mentality directly opposite to the over-enginnered things I see at work ;)
If you are a lucky ubuntu/debian user, it can be simple as this:
- make setup
- make run
Some other interesting make targets are "make package" to build a .love package and "make check" to run the (meaningless?) lua linter...