2020
Libbey - Demystifying Nixpkgs Part 3: The "Standard" Library
    https://www.youtube.com/watch?v=qYGo9QYNVpM
Libbey - Demystifying nixpkgs Part 2: Diving In
    https://www.youtube.com/watch?v=q8bZy9kuzEY
Libbey - Demystifying nixpkgs Part 1: Preliminaries
    https://www.youtube.com/watch?v=oWJaTb5uoT0
Ringer - Nixpkgs - Adding a package to unstable/master branch
    https://www.youtube.com/watch?v=fvj8H5yUKu8
    ! need to look