package libghc-haskelldb-doc (not installed) failed to install/upgrade: trying to overwrite '/usr/share/doc/haskell-haskelldb-doc/html/src/hscolour.css', which is also in package libghc6-haskelldb-doc 0.12-7build1

[Holden Karau]

Description: Ubuntu 12.04.1 LTS
Release: 12.04
Expected behaviour: package installs
Actual behaviour: package fails to install

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: libghc-haskelldb-doc (not installed)
Uname: Linux 3.6.0-rc6-custom-next-20120921 x86_64
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
Date: Mon Oct 8 22:52:24 2012
DuplicateSignature:
 Unpacking libghc-haskelldb-doc (from .../libghc-haskelldb-doc_2.1.1-2_all.deb) ...
 dpkg: error processing /var/cache/apt/archives/libghc-haskelldb-doc_2.1.1-2_all.deb (--unpack):
  trying to overwrite '/usr/share/doc/haskell-haskelldb-doc/html/src/hscolour.css', which is also in package libghc6-haskelldb-doc 0.12-7build1
ErrorMessage: trying to overwrite '/usr/share/doc/haskell-haskelldb-doc/html/src/hscolour.css', which is also in package libghc6-haskelldb-doc 0.12-7build1
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
SourcePackage: haskelldb
Title: package libghc-haskelldb-doc (not installed) failed to install/upgrade: trying to overwrite '/usr/share/doc/haskell-haskelldb-doc/html/src/hscolour.css', which is also in package libghc6-haskelldb-doc 0.12-7build1
UpgradeStatus: Upgraded to precise on 2012-04-30 (161 days ago)