d</code>) will use the appropriate loader from
<code class="mendoza-code">module/loaders</code> to get an environment table.  Each loader in the
table is just a function that takes the primary module identifier
(usually an absolute path to the module) as well as optionally any
other arguments passed to <code class="mendoza-code">require</code> or <code class="mendoza-code">import</code>, and returns
the environment table.  For example, the <code class="mendoza-code">:source</code> type is a thin
wrapper aro