[Karmic] installation XMonad fails due to dependencies

Binary package hint: xmonad

When you want to install XMonad (0.8.1-4) on Karmic (amd64) the following dependency issues occur:

$ sudo aptitude install xmonad
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done
The following packages are BROKEN:
  libghc6-xmonad-contrib-dev libghc6-xmonad-contrib-doc
The following NEW packages will be installed:
  ghc6-doc{a} libghc6-mtl-dev{a} libghc6-mtl-doc{a} libghc6-x11-dev{a}
  libghc6-x11-doc{a} libghc6-xmonad-dev{a} libghc6-xmonad-doc{a}
  libxext-dev{a} libxinerama-dev{a} x11proto-xext-dev{a}
  x11proto-xinerama-dev{a} xmonad
0 packages upgraded, 14 newly installed, 0 to remove and 0 not upgraded.
Need to get 9167kB/9209kB of archives. After unpacking 81.1MB will be used.
The following packages have unmet dependencies:
  libghc6-xmonad-contrib-dev: Depends: ghc6 (< 6.8.2dfsg1+) but 6.10.3-2ubuntu1 is installed.
                              Depends: libghc6-mtl-dev (= 1.1.0.0-2) but 1.1.0.2-7 is to be installed.
                              Depends: libghc6-x11-dev (= 1.4.2-1) but 1.4.5-4 is to be installed.
                              Depends: libghc6-xmonad-dev (= 0.8-1) but 0.8.1-4 is to be installed.
                              Depends: libghc6-utf8-string-dev (= 0.3.3-2) but it is not installable
  libghc6-xmonad-contrib-doc: Depends: ghc6-doc (< 6.8.2dfsg1+) but 6.10.3-2ubuntu1 is to be installed.
                              Depends: libghc6-mtl-doc (= 1.1.0.0-2) but 1.1.0.2-7 is to be installed.
                              Depends: libghc6-x11-doc (= 1.4.2-1) but 1.4.5-4 is to be installed.
                              Depends: libghc6-xmonad-doc (= 0.8-1) but 0.8.1-4 is to be installed.
                              Depends: libghc6-utf8-string-doc (= 0.3.3-2) but it is not installable
The following actions will resolve these dependencies:

Keep the following packages at their current version:
libghc6-xmonad-contrib-dev [Not Installed]
libghc6-xmonad-contrib-doc [Not Installed]

Leave the following dependencies unresolved:
libghc6-xmonad-dev recommends libghc6-xmonad-contrib-dev
libghc6-xmonad-doc recommends libghc6-xmonad-contrib-doc
Score is -332

Accept this solution? [Y/n/q/?] q
Abandoning all efforts to resolve these dependencies.
Abort.