let
  moz_overlay = import (builtins.fetchTarball https://github.com/mozilla/nixpkgs-mozilla/archive/master.tar.gz);
  nixpkgs = import <nixpkgs> { overlays = [ moz_overlay ]; };
in
  with nixpkgs;
  stdenv.mkDerivation {
    name = "ord-shell";
    buildInputs = [
      just
      nixpkgs.latest.rustChannels.stable.rust
      openssl
      pkg-config
    ];
  }