the nixpkgs repo is pretty difficult to fork
For this reason, Tvix (a modular Nix implementation) cites compatibility with nixpkgs as one of their goals:
The package collection is an enormous effort with hundreds of thousands of commits, encoding expert knowledge about lots of different software and ways of building and managing it. It is a very valuable piece of software and we must be able to reuse it.
Someone has recently posted this article to /r/wikipedia: https://old.reddit.com/r/wikipedia/comments/1e0rb3p/reliable_sources_how_wikipedia_admin_david_gerard/
Not as much traction elsewhere: https://www.reddit.com/domain/tracingwoodgrains.com/