Contributing increases the odds we'll be able to make the test suite. ;-) But yes, the code is very immature, right now it is basically a proof-of-concept in the middle of being refactored into its first sensible iteration (as mentioned at the top of the README).

I built the search engine from scratch initially because it was just an interesting problem I wanted to experiment with. However, now that I have one that works, I see massive benefits to not having too many external dependencies. It makes integration and packaging ever so much more pleasant.