Created easy setup instructions for Haskell editors / IDEs. Great way of using Nix to get a stable environment set up. Would really appreciate any feedback on this.
What exactly about Windows 10 convinced you to move away from it? What has changed? From usability/features perspective, it appears to be the best Windows yet.
So much FUD and bold assertions without any proof/reference in that article. Anyway, the point stands that Windows has to become open source as fast as possible - my guess is that the chances are pretty good that they are working on open sourcing Windows already.
codewars.com is a good alternative also. Currently it supports Clojure, CoffeeScript, Haskell, Java, JavaScript, Python, Ruby and they keep adding new languages according to user votes (Haskell and Java were the latest).