{pkgs ? import <nixpkgs> {}}:
pkgs.mkShell {
  buildInputs = [
    pkgs.haskellPackages.ghc
    pkgs.haskellPackages.stack
    pkgs.haskellPackages.yesod
    pkgs.haskellPackages.yesod-bin
    pkgs.haskellPackages.haskell-language-server
    pkgs.zlib
  ];
}