let fs_spec =
{ file_docroot = base_dir^"/dcrt";
file_uri = "/dcrt";
file_suffix_types = [
"css", "text/css";
"txt", "text/plain";
"html", "text/html";
];
file_default_type = "application/octet-stream";
file_options = [
`Enable_gzip;
`Enable_listings (simple_listing ?hide:None)
]
}