For example, RSS NOW plasmoid from KDE4 from kde-base/plasma-addons will not show any RSS feed unless use flag RSS is set for kde-base/plasma-workspace.
Ways to handle this:
1. Difficult: Prevent installation of such plasmoids if use flag is not set
2. Easy: Automatically set RSS use flag for kde-base/plasma-addons (there are no further dependencies, as far as I see)
Steps to Reproduce:
Ideally, RSS NOW plasmoid should not be installed when rss USE flag is disabled - I'm wondering why it's not the case.
Added 'rss' USE flag for kdeplasma-addons and a patch making some plasmoids optional via this USE flag (namely rssnow and news, please report if there are any other).
Added dependency on plasma-workspace[rss] to require RSS dataengine as well.
As of >=kdeplama-addons-4.4.2-r1
Please reopen if I messed up something.