{
  description = "vulkan stuff";
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    systems.url = "github:nix-systems/default-linux";
  };

  outputs = inputs: let
    eachSystem = inputs.nixpkgs.lib.genAttrs (import inputs.systems);
    pkgsFor = inputs.nixpkgs.legacyPackages;
  in {
    packages = eachSystem (system: {
      default = inputs.self.packages.${system}.ralc;
      ralc = pkgsFor.${system}.callPackage ./nix/package.nix {};
    });

    devShells = eachSystem (system: {
      default = let
        # vulkan
        vulkan-packages = builtins.attrValues {
          inherit
            (pkgsFor.${system})
            glfw
            shaderc
            vulkan-volk
            vulkan-loader
            vulkan-validation-layers
            renderdoc
            tracy
            vulkan-tools-lunarg
            ;
          inherit
            (pkgsFor.${system}.shaderc)
            bin
            static
            dev
            lib
            ;
        };
      in
        pkgsFor.${system}.mkShell {
          packages = builtins.attrValues {
            inherit
              (pkgsFor.${system})
              cargo
              rustc
              rustfmt
              bacon
              vulkan-headers
              vulkan-tools
              ;
            inherit
              (pkgsFor.${system}.rustPackages)
              clippy
              ;
            inherit vulkan-packages;
          };

          shellHook = ''
            echo "Vulkan Developement Shell"

              LD_LIBRARY_PATH = "${inputs.nixpkgs.lib.makeLibraryPath vulkan-packages}";

          '';
        };
    });
  };
}