[Haskell-cafe] Parsec on TeX

[Don Stewart]

allbery:
> 
> On 2008 May 4, at 23:40, Ross Boylan wrote:
> 
> >ERROR "grammar.hsl":21 - Type error in explicitly typed binding
> >*** Term           : envEnd
> >*** Type           : String -> GenParser Char a [Char]
> >*** Does not match : String -> Parser ()
> 
> Hugs is prone to error messages that obscure the problem.  The trick  
> here is to realize that the type "Parser ()" is the same as "GenParser  
> Char a ()"; this then tells you that you have used a function that  
> returns a [Char] (aka String) where a type () (Haskell's version of  
> (void)) is expected.

Yeah, if you're on Debian it would make sense to install GHC -- its much
more active, much faster, and supports more things.

It's well maintained on Debian too.

-- Don