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

  outputs = { self, nixpkgs }:
    let
      system = "x86_64-linux";
      pkgs = import nixpkgs {
        inherit system;
        overlays = [
          (self: super: {
            jogl = super.jogl.overrideAttrs {
              # upstream jogl doesn't have the required gluegen lib
              installPhase = ''
                runHook preInstall

                mkdir -p $out/share/java
                cp -v $NIX_BUILD_TOP/gluegen/build/gluegen-rt{,-natives-linux-*}.jar $out/share/java/
                cp -v $NIX_BUILD_TOP/jogl/build/jar/jogl-all{,-natives-linux-*}.jar  $out/share/java/
                cp -v $NIX_BUILD_TOP/jogl/build/nativewindow/nativewindow{,-awt,-natives-linux-*,-os-drm,-os-x11}.jar  $out/share/java/

                mkdir -p $out/lib
                cp -v $NIX_BUILD_TOP/gluegen/build/obj/*.so $out/lib
                cp -v $NIX_BUILD_TOP/gluegen/build/test/build/natives/*.so $out/lib
                cp -v $NIX_BUILD_TOP/jogl/build/jogl/obj/jogl/*.so $out/lib
                cp -v $NIX_BUILD_TOP/jogl/build/jogl/obj/*.so $out/lib
                cp -v $NIX_BUILD_TOP/jogl/build/lib/*.so $out/lib
                cp -v $NIX_BUILD_TOP/jogl/build/nativewindow/obj/*.so $out/lib
                cp -v $NIX_BUILD_TOP/jogl/build/newt/obj/*.so $out/lib
                cp -v $NIX_BUILD_TOP/jogl/build/oculusvr/obj/*.so $out/lib

                runHook postInstall
              '';
            };
          })
        ];
      };
      lib = pkgs.lib;
    in {
      devShells.${system}.default = pkgs.mkShell rec {
        name = "quil-env";
        buildInputs = [
          pkgs.xorg_sys_opengl
          pkgs.xorg.libXxf86vm 
          pkgs.xwayland
          pkgs.clojure
          # pkgs.jogl
        ];
        LD_LIBRARY_PATH = "${lib.makeLibraryPath buildInputs}";
        
        # wayland compat
        # see https://discourse.ubuntu.com/t/environment-variables-for-wayland-hackers/12750
        # WAYLAND_DISPLAY = "no";
        # DISPLAY = ":0";
        # _JAVA_AWT_WM_NONREPARENTING = "1";
      
        # we need to make sure the library is on the path for JOGL;
        # also, there's a bug that is avoided with the variable
        # https://github.com/processing/processing/issues/5476
        # JAVA_OPTS = "-Djogl.disable.openglcore=false";
        # XDG_SESSION_TYPE = "wayland";
        # LIBGL_ALWAYS_SOFTWARE = true; # ← this is the same as passing -Djogl.disable.openglcore="true"
      };
    };
}