

The repo has never been updated and the file is missing. There is the “default” keymap that doesn’t use the dlip.h file; you could try it. If it works, you could build your own keymap on top of it. Another option would be to look for other users’ config.
Getting the author to reply to your github issue would be the best outcome.
Otherwise, if you can get any keymap to work on the Chouchou, you’d be halfway there. Adapting the keymap from another keyboard with the same number of keys should not be too hard. You’d have to learn a bit more about QMK.