{
  pkgs,
  config,
  inputs,
  ...
}: let
  oopkgs = import inputs.nix-ocaml {system = pkgs.system;};
  opkgs = oopkgs.ocamlPackages;
in {
  # https://devenv.sh/packages/
  env.WTF = pkgs.lib.makeLibraryPath config.packages;
  packages =
    (with pkgs; [
      git
      pkg-config
    ])
    ++ (with pkgs; [ocaml opam dune_3])
    # ++ (with opkgs; [
    ++ (with pkgs.ocamlPackages; [
      base
      base_trie
      core
      utop
      ocamlformat
      csv
      ocaml-lsp
      uunf
      uuseg
    ]);
}