Recently been diving into Nix, elixir, gleam and F#. Heavily agree with you. One benefit of Elixir or Gleam is the friendly syntax and style that makes things easier to digest. That helps me quickly apply things to new situations. Nix is like the complete opposite, I struggle to understand other people's configs unless its super well commented.
Some of that is probably unavoidable as Nix is used by users aiming to solve fundamentally complex problems
Some of that is probably unavoidable as Nix is used by users aiming to solve fundamentally complex problems