Error while installing gitit over cabal.

Hi everyone,

I'm pretty not sure if I'm at the right place for this bug.

I was running my gitit over a long time on my Debian machine which works great. Recently i switched over to OpenBSD (5.2) with ghc-7.0.4 . My steps to install were the following:
- Installed cabal from http://www.haskell.org/cabal/download.html as tar.gz
- Started `cabal update`
- Started `cabal install gitit`

The Problem is that the compiling throws errors on `zip-archive-0.1.1.8` (a dependency of `pandoc 1.9.4.5`)

```
Building zip-archive-0.1.1.8...
Preprocessing library zip-archive-0.1.1.8...
[1 of 1] Compiling Codec.Archive.Zip ( Codec/Archive/Zip.hs, dist/build/Codec/Archive/Zip.o )
Codec/Archive/Zip.hs:413:13: Not in scope: `lookAheadM'
Codec/Archive/Zip.hs:486:10: Not in scope: `lookAhead'
Codec/Archive/Zip.hs:514:33: Not in scope: `lookAhead'
Codec/Archive/Zip.hs:575:10: Not in scope: `lookAhead'
cabal: Error: some packages failed to install:
```

The point is: what does cabal mean? The dependency for pandoc is zip-archive (≥0.1.1.7 & <0.2). Which would match to `zip-archive-0.1.2.1` as well (which i can build withou any problems!). Why does cabal choose the 0.1.1.8 version.

Would be great if anyone could tell me how to fix that. Perhaps with some `cabal` magic (to use 0.1.2.1) or some thing.

Thank you!