On Thu, 2008-11-06 at 16:36 -0800, Conal Elliott wrote:
Hi Andres,
I just downloaded and compiled lhs2tex-1.14 on ghc 6.10.1, and I'm getting an error:
... [16 of 19] Compiling Math ( Math.lhs, Math.o ) [17 of 19] Compiling FileNameUtils ( FileNameUtils.lhs, FileNameUtils.o )
FileNameUtils.lhs:81:35: Ambiguous type variable `b' in the constraint: `GHC.Exception.Exception b' arising from a use of `catch' at FileNameUtils.lhs:(81,35)-(89,60) Probable fix: add a type signature that fixes these type variable(s)
Any advice?
Constrain the version of base to be < 4. You can do that in the .cabal file or if you use cabal-install-0.6 or later then it does that by default for packages which do not specify any constraint (on the basis that most existing packages build with base 3 and new ones that need base 4 will say so). Duncan