Description of problem:
Thunderbird lightning is no longer part of sunbird package and thunderbird-lightning package in EPEL is incompatible with latest thunderbird. The extension is now subpackage of thunderbird package.
Version-Release number of selected component (if applicable):
The part about lightning being incompatible is a duplicate of bug 668513.
The other part is invalid. The thunderbird source RPM is part of RHEL, which only builds the thunderbird package itself. EPEL does not have a source RPM for thunderbird, but it does have a source RPM for sunbird, which is used to build both the sunbird package and the thunderbird-lightning package. See: http://download.fedora.redhat.com/pub/epel/6/SRPMS/
This is not true anymore: http://pkgs.fedoraproject.org/gitweb/?p=thunderbird.git;a=commit;h=c7ccebccb44afbe3c0a42b84107b9888430df5ef
It appears that Lightning is completely abandoned ATM :(
@Lubomir: You have not responded to this bug report since it was opened four
months ago. Please respond if you are still maintaining the sunbird package.
Otherwise I will ask FESco to take over this package, following the process
SECOND TRY -- @Lubomir: You have not responded to this bug report since it was
opened five months ago. Please respond if you are still maintaining the sunbird
package. Otherwise I will ask FESco to delete this package, following the
process described in: http://fedoraproject.org/wiki/Policy_for_nonresponsive_package_maintainers
Uh, sorry for my non-responsiveness. I am not able to maintain Sunbird any more and am orphaning the package.
The lightning has separate package - thunderbird-lightning now. Closing as notabug.