Dolphin is unable to install service menu properly without ruby

[nowardev]

Dolphin can't install service menu properly it says :

 /usr/bin/env: ruby: No such file or directory
 dolphin(4723)/knewstuff (api): Command failed

/usr/bin/servicemenuinstallation is ruby, so needs to be a depends not suggests

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: dolphin 4:4.9.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.5.0-7.7-generic 3.5.0
Uname: Linux 3.5.0-7-generic i686
ApportVersion: 2.4-0ubuntu8
Architecture: i386
Date: Sun Aug 19 19:19:23 2012
ProcEnviron:
 LANGUAGE=en_US:en
 TERM=xterm
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: kde-baseapps
UpgradeStatus: No upgrade log present (probably fresh install)

[Sam Rog (samrog131)]

An earlier bug report: https://bugs.launchpad.net/ubuntu/+source/kde-baseapps/+bug/706900
Marking this as duplicate.