{
  description = "Insecure mock server for OAuth2";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs";
  };

  outputs = { self, nixpkgs }:
    let
      system = "x86_64-linux";
      name = "oauth2-mock-server";
      pkgs = import nixpkgs { inherit system; };
      stackWrapper = pkgs.symlinkJoin {
        name = "stack";
        paths = [ pkgs.stack ];
        buildInputs = with pkgs; [ makeWrapper ];
        postBuild = ''
          wrapProgram $out/bin/stack \
            --add-flags "--no-install-ghc"
        '';
      };
      buildInputs = [ stackWrapper ] ++ (
        with pkgs; [ reuse zlib ] ++ (
          with haskell.packages."ghc927"; [ ghc haskell-language-server ]
        )
      );
    in {

    packages.${system}.${name} = nixpkgs.legacyPackages.${system}.${name};
    packages.${system}.default = self.packages.${system}.${name};

    devShells.${system}.default = pkgs.mkShell {
      buildInputs = buildInputs;
      LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath buildInputs;
    };
  };
}