{
  description = "RIPs development environment";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.11";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = {
    nixpkgs,
    flake-utils,
    ...
  }:
    flake-utils.lib.eachDefaultSystem (system: let
      pkgs = nixpkgs.legacyPackages.${system};

      nearley = pkgs.buildNpmPackage {
        pname = "nearley";
        version = "2.20.1";
        src = ./nix/nearley;
        npmDepsHash = "sha256-a0RjAhSlzEbe6tM6QsZa06xKc0uzEe0cK6OsuVQSSzo=";
        dontNpmBuild = true;
      };
    in {
      devShells.default = pkgs.mkShell {
        buildInputs =
          (with pkgs; [
            asciidoctor
            pkgs.lychee
            nodejs
            pandoc
            shellcheck
            yq
          ])
          ++ [
            nearley
          ];
      };

      checks = {
        grammar =
          pkgs.runCommand "grammar-check" {
            nativeBuildInputs =
              (with pkgs; [
                nearley
                nodejs
                yq
              ])
              ++ [
                nearley
              ];
          } ''
            ${./0004-general-uri-scheme/data/test/uri-scheme-tester.sh} ${./0004-general-uri-scheme/data}
            touch $out
          '';

        links = pkgs.testers.lycheeLinkCheck {
          site = pkgs.lib.sources.sourceFilesBySuffices ./. [".md" ".adoc"];
          extraConfig = {
            extensions = ["md" "adoc"];
            include_fragments = true;
            exclude = [
              "^rad:.*$"
              "^web\\+rad:.*$"
              "^vscode:.*$"
            ];
          };
        };
      };
    });
}