_: {
  config.perSystem =
    {
      config,
      inputs',
      pkgs,
      ...
    }:
    {
      devShells = {
        hugo = pkgs.mkShell {
          name = "hugo-shell";
          nativeBuildInputs = config.develPackages
            ++ config.hugoBuildPackages
          ;
          shellook = ''
            mkdir -p themes
            ln -snf "${config.themePackage}/" "themes/mainroad"
          '';
        };
        latex = pkgs.mkShell {
          name = "latex-shell";
          nativeBuildInputs = config.develPackages
            ++ config.latexBuildPackages;
        };
      };
    };
}