module/paths

    array
    boot.janet on line 2643, column 1

    The list of paths to look for modules, templated for 
    `module/expand-path`. Each element is a two-element tuple, 
    containing the path template and a keyword :source, :native, or 
    :image indicating how `require` should load files found at these 
    paths.

    A tuple can also contain a third element, specifying a filter that 
    prevents `module/find` from searching that path template if the 
    filter doesn't match the input path. The filter can be a string or 
    a predicate function, and is often a file extension, including the 
    period.