{
  description = "Parser for the Nix language";

  inputs = {
    nixpkgs.url = "https://channels.nixos.org/nixpkgs-unstable/nixexprs.tar.zst";
    flake-parts.url = "github:hercules-ci/flake-parts";
    zeiss = {
      url = "git+ssh://forgejo@git.ginkogruen.net/ginkogruen/zeiss";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.flake-parts.follows = "flake-parts";
    };
  };

  outputs =
    inputs:
    inputs.flake-parts.lib.mkFlake { inherit inputs; } {

      systems = [
        "x86_64-linux"
        "aarch64-linux"
        "aarch64-darwin"
      ];

      perSystem =
        {
          pkgs,
          system,
          self',
          ...
        }:
        {
          packages.default = self'.packages.nix_parser;
          packages.nix_parser = inputs.zeiss.lib.${system}.buildGleamApplication {
            pname = "nix_parser";
            version = "1.0.0";
            src = ./.;

            doCheck = true;
            compileNoDev = false;
            # As `nix_parser` is a library it doesn't have a `main()` function in `src/nix_parser.gleam`.
            evalModule = "nix_parser_dev";

            erlang = pkgs.beam29Packages.erlang;
            elixir = pkgs.beam29Packages.elixir_1_20;

            zeissNix = import ./zeiss.nix;
          };

          devShells.default = pkgs.mkShell {
            packages = with pkgs; [
              # Gleam tooling
              gleam
              beam29Packages.erlang
              beam29Packages.elixir_1_20

              # Nix tooling
              nixd
              nixfmt
              nix-output-monitor

              # Other
              inputs.zeiss.packages.${system}.zeiss
              hyperfine
            ];
          };
        };
    };
}