Hi Michael, thank you for your prompt answer. I was not even able to downgrade as my yum rollback command <transaction-id> failed. I'm in the need to use eclipse, so I uninstalled all fedora eclipse packages and download an Eclipse IDE for c/c++ developers from the eclipse website, now I have in a temporary folder a running instance of Eclipse Mars that I used to open a little test project and it's building fine.

I've also installed bodhi-client searched on the bodhi website and found the contents of your next email. I checked my yum repos' setup. I've a bunch of repos, from planetccrma to jenkins, rpmfusion etc ... but no testing or debug repos enabled.

I've created a new test user.

Issued yum install eclipse as root

Issued yum install eclipse-cdt as root

logout from my own user and then login as the new created user.

Issued eclipse & and with this new user I've the C perspective back again

Logout the new user and then login with my own.

eclipse & --> no C perspective, not possible to create new projects

I then completely removed my workspace metadata and my user eclipse setup in .eclipse in my home folder.

Now I have the C perspective back again

I think that in some way my own setup has been compromised, but I'm not able to say when or to tell the cause.

I think it's not worth to file a bug as the problem was with my own setup of eclipse.

Thank you very much for your support.

Have a nice day

On Tue, Mar 24, 2015 at 11:28 AM, Michael Schwendt <mschwendt@gmail.com> wrote:

On Tue, 24 Mar 2015 09:38:59 +0100, luca paganotti wrote:

> Hi all, I'm searching help about the last eclipse-cdt update carried out on
> my fedora 20 box.
> It seems I'm not able anymore to load my existing c++ projects, nor create
> new ones. I've tried to uninstall and then reinstall all my eclipse
> environment few times. I've also tried to rollback to the previous yum
> transaction. The c perspective is absent. I've tried also to issue eclipse
> with the -clean switch. But no hope for the time being. The last cdt update
> is about eclipse-cdt 8.3.0-2 x86_64 and was performed on 2015-03-22.
>
> Is there someone kind to help or drive me to the right source of info?
>
> Thank you for any answer and forgive my italianish ...

Downgrading is a good idea and may help during trouble-shooting.

Create a fresh user account and try to reproduce the problem there.

Become familiar with the Fedora Updates System website
running an app called "bodhi":

https://admin.fedoraproject.org/updates/

Locate the update tickets that may be the culprit. In one ticket there
can be multiple packages. Perhaps you've not downgraded all related
packages. Also watch out for new test-updates that may already fix
the problem.

Finally, the links of the form

http://bugz.fedoraproject.org/SOURCE-RPM-PACKAGE-NAME

e.g. http://bugz.fedoraproject.org/eclipse-cdt

are a very convenient to Fedora bugzilla and other infrastructure
places, such as a list of currently open problem reports. It may be
necessary to open a ticket there, especially if you can reproduce
the problem in a fresh user account.
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