{ mkDerivation }: # How to obtain `sha256`: # nix-prefetch-url --unpack https://github.com/erlang/otp/archive/OTP-${version}.tar.gz mkDerivation { version = "23.2.6"; sha256 = "sha256-G930sNbr8h5ryI/IE+J6OKhR5ij68ZhGo1YIEjSOwGU="; }