let
  sources = import ../../npins;
in
  {pkgs ? import sources.pin-vim-tw {}}:
    pkgs.mkShell {
      name = "vim-tw";
      packages = with pkgs; [
        haskellPackages.cabal-fmt
        haskellPackages.cabal-install
        haskellPackages.ghc
        haskellPackages.haskell-language-server
        haskellPackages.retrie
      ];
    }