{ pkgs ? import ./nixpkgs.nix }: let ghcWithPkgs = pkgs.haskellPackages.ghcWithPackages (p: with p; [ directory filepath process http-client http-client-tls aeson regex-applicative haskeline stack2nix cabal-install ]); in pkgs.mkShell { buildInputs = with pkgs; [ ghcWithPkgs git nix-prefetch-scripts ]; }