If you're trying to learn to develop against the private Egg, Inc. API, look into protobuf/ei.proto and lib/api first.
If you want to contribute reach please reach out to me on discord first (@carpetsage). I am open to pull requests
If you want to build this yourself I suggest looking at the various Makefiles and the github build yamls in .github/workflows
Original Project: https://github.com/fanaticscripter/egg