{
  description = "PBSA: Physikalisch Basierte Simulation und Animation";

  inputs.nixpkgs.url = "nixpkgs/nixpkgs-unstable";

  outputs =
    { nixpkgs
    , self
    , ...
    }:
    let
      systems = [
        "x86_64-linux"
        "aarch64-linux"
      ];

      forAllSystems = f: nixpkgs.lib.genAttrs systems (system: f system);
    in
    {
      devShells = forAllSystems
        (system:
          let
            pkgs = nixpkgs.legacyPackages.${system};
          in
          {
            default =
              let
                py-pkg = pkgs.python3.withPackages (python-pkgs: with python-pkgs;
                  [
                    # glad2 # todo
                    glad
                    anyqt
                    eigenpy
                    pip
                  ]);

              in
              pkgs.mkShell {
                packages = with pkgs; [
                  # base toolchain
                  gcc13
                  gdb
                  clang
                  libgcc
                  qt6.full
                  qtcreator
                  cmake
                  nlohmann_json
                  qt6.qtwayland
                  icu
                  libcxx
                  nil
                  libGL
                  libGLU
                  eigen
                  py-pkg
                ];

                shellHook = ''
                  # Tells pip to put packages into $PIP_PREFIX instead of the usual locations.
                  # See https://pip.pypa.io/en/stable/user_guide/#environment-variables.
                  export PIP_PREFIX=$(pwd)/_build/pip_packages
                  export PYTHONPATH="$PIP_PREFIX/${py-pkg.sitePackages}:$PYTHONPATH"
                  export PATH="$PIP_PREFIX/bin:$PATH"
                  unset SOURCE_DATE_EPOCH
                '';
              };

          });
    };
}