{ lib, config, hooks, ... }:
let
  pjs =
    let
      msg = "foverrides.nix: Expected to find `package.json' to lookup "
        + "package name/version, but no such file exists at: "
        + (toString ../package.json);
    in
    if builtins.pathExists ../package.json then
      lib.importJSON ../package.json
    else
      throw msg;
  ident = pjs.name;
  inherit (pjs) version;

  # ---------------------------------------------------------------------------- #

  # example: "13.4.2"
  nextVersion = builtins.head (builtins.attrNames
    (lib.filterAttrs (name: _attrs: name == "next") config.floco.pdefs).next);

  # we must change the precompiled swc binary depending on the curerent system.
  # example: "@next/swc-linux-x64-gnu"
  swcArch = {
    "x86_64-linux" = "@next/swc-linux-x64-gnu";
    "aarch64-linux" = "@next/swc-linux-arm64-gnu";
    "x86_64-darwin" = "@next/swc-darwin-x64";
    "aarch64-darwin" = "@next/swc-darwin-arm64";
  }.${config.floco.settings.system};

  # example: "13.4.2"
  pagefindVersion = builtins.head (builtins.attrNames
    (lib.filterAttrs (name: _attrs: name == "pagefind") config.floco.pdefs).pagefind);

  # we must change the precompiled swc binary depending on the curerent system.
  # example: "@next/swc-linux-x64-gnu"
  pagefindArch = {
    "x86_64-linux" = "@pagefind/linux-x64";
    "aarch64-linux" = "@pagefind/linux-arm64";
    "x86_64-darwin" = "@pagefind/darwin-x64";
    "aarch64-darwin" = "@pagefind/darwin-arm64";
  }.${config.floco.settings.system};
in
{
  config.floco.packages.${ident}.${version} =
    let
      cfg = config.floco.packages.${ident}.${version};
    in
    {
      # ---------------------------------------------------------------------------- #

      # Removes any `*.nix' files as well as `node_modules/' and
      # `package-lock.json' from the source tree before using them in builds.
      source = lib.libfloco.cleanLocalSource ../.;

      # nextjs writes in node_mdules
      built = {
        override = {

          copyTree = true;

          # nextjs chaches some stuff in $HOME
          preBuild = ''
            export HOME=./home

            ${hooks.prepare}
          
            ls -la src/models/data
          '';
          postBuild = ''
            npx next-sitemap
            npx pagefind --site ./out
            ls -la out
          '';
        };

        tree =
          let
            customOverrides = cfg.trees.dev.overrideAttrs (prev: {
              treeInfo = prev.treeInfo // {
                "node_modules/${swcArch}" = {
                  key = "${swcArch}/${nextVersion}";
                  link = false;
                  optional = false;
                  dev = true;
                };
                "node_modules/${pagefindArch}" = {
                  key = "${pagefindArch}/${pagefindVersion}";
                  link = false;
                  optional = false;
                  dev = true;
                };
                # We can inject dependencies here
                #
              };
            });
          in
          lib.mkForce customOverrides;
      };
    };
}