flake.nix

{
  description = "Emacs major mode for TypeSpec (using tree-sitter)";

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

    tree-sitter-typespec = {
      type = "github";
      owner = "happenslol";
      repo = "tree-sitter-typespec";
      flake = false;
    };
  };

  outputs = { self, nixpkgs, flake-utils, tree-sitter-typespec }:
    flake-utils.lib.eachDefaultSystem (system:
      let pkgs = import nixpkgs { inherit system; };
      in {
        packages = rec {
          default = typespec-ts-mode-emacs29;

          typespec-ts-grammar = pkgs.tree-sitter.buildGrammar {
            language = "tree-sitter-typespec";
            version = tree-sitter-typespec.rev;
            src = tree-sitter-typespec;
          };

          typespec-ts-mode = emacsPkgs:
            emacsPkgs.trivialBuild {
              pname = "typespec-ts-mode";
              version = "0.1";
              src = ./.;
            };

          typespec-ts-mode-emacs29 =
            typespec-ts-mode (pkgs.emacsPackagesFor pkgs.emacs29);
        };
      });
}