Re: reproducing...
When you loose internet connection during cabal run or you try to build without internet access you get this on Win 8 (for any package...)
$ cabal install hoogle
Resolving dependencies...
Downloading hoogle-4.2.32...
Failed to install hoogle-4.2.32
Last 10 lines of the build log ( C:\Users\mantkiew\AppData\Roaming\cabal\logs\hoogle-4.2.32.log ):
cabal.exe: C:\Users\mantkiew\AppData\Roaming\cabal\logs\hoogle-4.2.32.log:
does not exist
But when the connection returns, I could successfully built it. Previously, however, that was not the case (with pandoc example).