{
  description = "Dev shell for think.greaterchiangmai.com (frontend + backend Laravel apps)";

  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";

  outputs = { self, nixpkgs }:
    let
      systems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
      forAll = f: nixpkgs.lib.genAttrs systems (system: f nixpkgs.legacyPackages.${system});
    in
    {
      devShells = forAll (pkgs:
        let
          php = pkgs.php83;
        in
        {
          default = pkgs.mkShell {
            packages = [
              php
              php.packages.composer
              pkgs.mariadb
              pkgs.nodejs_22
            ];

            shellHook = ''
              export DEV_ROOT="$PWD"
              export PATH="$DEV_ROOT/dev:$PATH"
              echo "think-greaterchiangmai dev shell — run 'dev help'"
            '';
          };
        });
    };
}