{
  inputs.nixpkgs.url = "github:NixOS/nixpkgs?ref=nixos-unstable";

  outputs = { self, nixpkgs, ... }@inputs:
    let
      supportedSystems = [ "x86_64-linux" ];
      forAllSystems' = nixpkgs.lib.genAttrs;
      forAllSystems = forAllSystems' supportedSystems;

      pkgsForSystem =
        system:
        import nixpkgs { inherit system; overlays = [  ]; };
    in
      {
        devShells = forAllSystems (system:
          let
            pkgs = pkgsForSystem system;
            hPkgs = pkgs.haskell.packages."ghc962";
            stack-wrapper = pkgs.symlinkJoin {
              name = "stack";
              paths = [ pkgs.stack ];
              buildInputs = [ pkgs.makeWrapper ];
              postBuild = ''
                wrapProgram $out/bin/stack \
                  --add-flags "\
                    --no-nix \
                    --system-ghc \
                    --no-install-ghc \
                  "
              '';
            };
          in
            {
              default =
                pkgs.mkShell rec {
                  LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath buildInputs;
                  buildInputs = with pkgs; [
                    stdenv.cc
                    stack-wrapper
                    hPkgs.ghc
                    hPkgs.implicit-hie
                    hPkgs.haskell-language-server
                    SDL2
                    SDL2_image
                    libtiff
                    libwebp
                    pkg-config
                  ];
                };
            }
        );
      };
}