On Tue, 2008-10-14 at 07:13 -0500, Antoine Latter wrote: > On Tue, Oct 14, 2008 at 12:03 AM, Magicloud > <[EMAIL PROTECTED]> wrote: > > Hi, > > I wanted to install this package. Well, > > Building hprotoc-0.3.1... > > ... > > [3 of 7] Compiling Text.ProtocolBuffers.ProtoCompile.Parser ... > > > > Text/ProtocolBuffers/ProtoCompile/Parser.hs:48:0: > > Type synonym `GenParser' should have 2 arguments, but has been given 1 > > In the type synonym declaration for `P' > > > > And it just stopped here. > > This is an incompatibility between parsec-2 and parsec-3. In > parsec-2, 'GenParser' is declared with a 'data' declaration, whereas > in parsec-3 it's a type synonym. Since type-synonym declared > type-constructors cannot be partially applied this doesn't work. > > Currently in parsec-3 'GenParser' is declared as: > > > type GenParser tk st = Parsec [tk] st > > We should be able to change it to: > > > type GenParser tk = Parsec [tk] > > in Text.Parsec.String, unless I'm forgetting something else tricky > about type synonyms. > > Derek, does this sound reasonable?
The problem is Parsec itself is a type synonym. type Parsec s u = ParsecT s u Identity so that latter definition of GenParser leads to a partial application of Parsec. _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
