Thanks that works, but I have packages that rely on mtl>=2.0, so its
not the best solution. Perhaps the maintainer of FileManipCompat could
be contacted to update the package?
On 1/4/11, Daniel Fischer
On Wednesday 05 January 2011 01:54:36, Tony Miller wrote:
Hi,
I'm trying to install FileManipCompat(well, really HStringTemplateHelpers, but the error is from FileManipCompat) and I'm getting this error:
[1 of 1] Compiling System.FilePath.FindCompat ( System/FilePath/FindCompat.hs, dist/build/System/FilePath/FindCompat.o )
System/FilePath/FindCompat.hs:175:20: Not in scope: data constructor `State'
Apparently the code is written for an older version of mtl. As of mtl-2.*, State is no longer a separate type, it's a type synonym for
StateT s Identity
now.
You can try
$ cabal install --constraint="mtl < 2.0" HStringTemplateHelpers
(although having multiple versions of mtl installed may lead to some headaches too).