tel/env-parser-talk — pull request #3 by tel (2014-03-11 21:28:39+00:00)
Title: Slap-dash first attempt to get some more parsers

This attempt brings up a fairly large number of issues:

1. fromEnv :: String -> Either String a

is too weak to use recursively, we need to keep a parser
of some kind or another around

maybe something simple like

fromEnv :: Atto.Parser a

is enough.

2. we should pick an appropriate input format for Word and Int types
(probably hexadecimal, but it should be done correctly)

3. methods of roundtripping through the parser should be tested---
we don't have a genuine printer module (that'd be useless here)
so it's a little challenging to know how we're building the tests

4. Tuples rely on better recursivity in the parser