{
  description = "Announce nixos rebuild with dark souls-like message";

  inputs = {
    nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs =
    {
      self,
      nixpkgs,
      flake-utils,
    }:
    flake-utils.lib.eachDefaultSystem (
      system:
      let
        pkgs = import nixpkgs { inherit system; };
        lib = pkgs.lib;
      in
      {
        packages.default = pkgs.stdenv.mkDerivation {
          pname = "souls";
          version = "0.1.0";
          src = self;

          nativeBuildInputs = [
            pkgs.odin
            pkgs.makeWrapper
          ];

          buildInputs = [
            pkgs.raylib
            pkgs.libuuid
            pkgs.zlib
          ];

          buildPhase = ''
            odin build . -o:aggressive -out:souls
          '';

          installPhase = ''
            mkdir -p $out/bin
            cp souls $out/bin/souls
            WRAP_PATH=${
              lib.makeLibraryPath [
                pkgs.raylib
                pkgs.zlib
                pkgs.libuuid
              ]
            }
            wrapProgram $out/bin/souls \
              --prefix LD_LIBRARY_PATH : "$WRAP_PATH" \
              --set-default DYLD_LIBRARY_PATH "$WRAP_PATH"
          '';
        };

        apps.default = {
          type = "app";
          program = "${self.packages.${system}.default}/bin/souls";
        };

        devShells.default = pkgs.mkShell {
          packages = with pkgs; [
            odin
            ols
            raylib
            lldb
          ];
        };
      }
    );
}