with import <nixpkgs> {}; {
  env = stdenv.mkDerivation {
    name = "tools";
    buildInputs = with pkgs; with nodePackages; with haskellPackages; [
      nodemon
      sqlite
      cabal-install
      tmux
      tmuxinator
      (import ./stylish-haskell {
        inherit mkDerivation aeson base bytestring containers directory filepath
          fetchFromGitHub haskell-src-exts mtl syb yaml stylish-haskell strict
          optparse-applicative HUnit test-framework test-framework-hunit stdenv;
      })
    ];
  };
}