Dia's desktop entry given invalid package name "dia-gnome-gnome"

[Silicoid]

I wanted to install dia via the software center. It wasn't found so I wasn't able to install it via the software center. I went to the CLI and installed it without problem. The same is with other software like i.e. perl. Why can't I search for this software and install it via the Software Center? Especially when it comes to software like dia it is bad because users who are not familiar with kubuntu won't be able to install it.

I also couldn't find any document that explains why this happens. If this is "works as designed" then a message/button/link would be nice that gives an explanation.

[Jonathan Thomas (echidnaman)]

I can find Dia just fine.

[Silicoid (78luphr0rnk2nuqimstywepozxn9kl19tqh0tx66b5dki1xxsh5mk-launchpad)]

I've created a screen shot with the about window:
https://picasaweb.google.com/lh/photo/ULudTbfQfmKnUXuNbM9MQNMTjNZETYmyPJy0liipFm0?feat=directlink

[Jonathan Thomas (echidnaman)]

Oh, right that bug. Where no matter what term is searched, those same results are shown.

Hmm, could you try using an updated Muon from https://launchpad.net/~echidnaman/+archive/qapt/ please?

[Silicoid (78luphr0rnk2nuqimstywepozxn9kl19tqh0tx66b5dki1xxsh5mk-launchpad)]

No, it doesn't show the same results when I search for different things. it finds other software like digikam just fine. I updated anyways, still doesn't find dia, which is installed at the moment:
# dpkg -l dia
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Description
+++-==============-==============-============================================
ii dia 0.97.1-9 Diagram editor

Screenshot: https://picasaweb.google.com/lh/photo/pA52KRLhpCy47RsG7B1SfdMTjNZETYmyPJy0liipFm0?feat=directlink

[Jonathan Thomas (echidnaman)]

Ah, I was referring to the first screenshot you posted which has totally unrelated packages, which I have seen before as a different bug. That's a red herring, however.

I was unable to reproduce this bug earlier due to being on an older version of Ubuntu (still with the latest Muon), but now testing on 11.10, I can in fact confirm that Muon can't find Dia. The Muon Software Center uses data from the app-install-data package to determine which packages are in fact "applications" versus technical packages. The file for dia in app-install-data incorrectly refers to the package name of dia being "dia-gnome-gnome". (It should be dia-gnome) Since the dia-gnome-gnome package does not exist, Muon automatically hides the entry since nothing could be done with it anyway.

This should affect the Ubuntu Software Center as well, since it also uses app-install-data.