[Haskell-cafe] Basic question....

[Chaddaï Fouché]

Not only does you lack some parens around your patterns, your function
types are wrong :

type Key = String

data EnvItem a = EnvItem (Key, a)

envKey :: EnvItem a -> String
envKey (EnvItem (key, value)) = key

envValue :: EnvItem a -> a
envValue (EnvItem (key, value)) = value

-- 
Jedaï