{ mkDerivation }: # How to obtain `sha256`: # nix-prefetch-url --unpack https://github.com/erlang/otp/archive/OTP-${version}.tar.gz mkDerivation { version = "22.3.4.19"; sha256 = "sha256-U3ks7pDIqS8HVJ+yBobhEbKvnd9svEcQd9BsJQwajDs="; }