4 Jan
2011
4 Jan
'11
8:07 p.m.
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).