It does, unfortunately, have significant whitespace. (I'd be curious to hear from a blind person whether sig whitespace is as painful to them as it sounds like it would be to me.)
Haskell is actually defined as a braces-and-semicolon langage with an off-side rule for the convenience of layout sensitive code. The transformation is simple and completely deterministic, so if delimiters and separators are preferable to a blind coder they can reasonably easily use that.