I'm trying to run a single test by following the instructions:
>doctest -isrc -Wall -fno-warn-type-defaults <filename.hs>
From the base directory, I ran `doctest` from `ghci` and from the command line, but neither worked.
Here's the output from ghci since running `doctest` from the command-line itself probably doesn't make sense?
>> doctest -isrc -Wall -fno-warn-type-defaults Id.hs
<interactive>:4:31: parse error on input ‘type’