The answer to your question is in the FAQ on the website for Next LS in particular, and a motivation for the whole elixir-tools family of projects on the home page
Not sure how I’ve never heard of elixir tools in spite of being a full time elixir dev.
Going to install this first thing tomorrow.
I hope you guys are adding first class test and debugging support too. (Maybe you have, I haven’t read the whole list of features)
I'm not really sure how 'Not Invented Here' applies to someone building an OSS project.
In general I don't think it's fair to leave drive by comments like that without elaboration, as others might just see it and take it at face value when further clarification might reveal a misunderstanding.