Dolphin servicemenu installation script depends ruby. Ruby is not installed as default

[Sam Rog]

Binary package hint: kdebase

Kubuntu 11.04 Alpha 1
KDE 4.5.95
Package: dolphin (4:4.5.95-0ubuntu1)
Alternate install CD, Daily build 23-Jan-2011.

The Dolphin has installation option: Dophin > Configure Dolphin > Services > Download New Services.

The Install/Download New services is using script /usr/bin/servicemenuinstallation. The script needs ruby to work.

When starting the Dolphin from the konsole there is an error message:

"/usr/bin/env: ruby: No such file or directory
dolphin(2098)/knewstuff (api): Command failed"

Fix: Install the ruby package.

This is same as the Archlinux bug: https://bugs.archlinux.org/task/18140
"dolphin in KDE 4.4 needs ruby in order to install new service menus with GHNS, otherwise it fails silently (it still fails most of the times anyway, but that's a different upstram issue). It should have ruby as an (opt?)depends."

[Sam Rog (samrog131)]

... and as the package dolphin has "Suggests: ruby" this bug report is invalid.

[Harald Sitter (apachelogger)]

I am not so sure about that. IMHO it should be promoted to recommends as it impairs the functionality of that feature... or make dolphin try run it at KCM start and if it fails hide the button, or patch dolphin to install ruby if the user tries to use the feature..

Many options on what it should be doing, but silently failing is plain wrong.

[Removed by request (removed1836289)]

Here's a python "port" of the servicemenuinstallation ruby script. This avoids the dependency on ruby altogether as Python is installed on all ubuntu systems and then some.

Note, it's mostly untested, and I've no idea what the hell is happening in the last three lines. If a dolphin dev could pick this up, it'd be great.
There's another deinstallation ruby script which is much shorter and can be easily ported as well.

[Removed by request (removed1836289)]

Update of last attachment to fully implement it.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Harald Sitter (apachelogger)]

I do not think maintaining two scripts would be good. Certainly not if Ubuntu needs to maintain one, because that will doubtlessly go incompatible at some point and then probably cause all sorts of headaches :(

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[skierpage (skierpage)]

This seems the only reason Ruby is required in Kubuntu. I filed upstream bug https://bugs.kde.org/show_bug.cgi?id=399229