Error with gitit

gistfile1.txt

$ cabal install gitit
Resolving dependencies...
cabal: cannot configure happstack-server-7.1.0. It requires directory >=1.2
For the dependency on directory >=1.2 there are these packages:
directory-1.2.0.0 and directory-1.2.0.1. However none of them are available.
directory-1.2.0.0 was excluded because process-1.1.0.1 requires directory
==1.1.0.2
directory-1.2.0.0 was excluded because hpc-0.5.1.1 requires directory
==1.1.0.2
directory-1.2.0.0 was excluded because directory-1.1.0.2 was selected instead
directory-1.2.0.0 was excluded because bin-package-db-0.0.0.0 requires
directory ==1.1.0.2
directory-1.2.0.0 was excluded because Cabal-1.14.0 requires directory
==1.1.0.2
directory-1.2.0.0 was excluded because ghc-7.4.2 requires directory ==1.1.0.2
directory-1.2.0.1 was excluded because process-1.1.0.1 requires directory
==1.1.0.2
directory-1.2.0.1 was excluded because hpc-0.5.1.1 requires directory
==1.1.0.2
directory-1.2.0.1 was excluded because directory-1.1.0.2 was selected instead
directory-1.2.0.1 was excluded because bin-package-db-0.0.0.0 requires
directory ==1.1.0.2
directory-1.2.0.1 was excluded because Cabal-1.14.0 requires directory
==1.1.0.2
directory-1.2.0.1 was excluded because ghc-7.4.2 requires directory ==1.1.0.2