newbie questions

[Sérgio Basto]

Hi, 
I need to be sure. In Fedora 22 with plasma 5 , is not possible start
up kde-plasma 4 ? or use  plasmoids for plasma 4 ? 

I'm looking for smb4k.spec [1], I have done a 
sub-package kde-plasma-smb4k , but is not useful on Fedora 22 , isn't
it ?  

Another question to build packages for plasma 5 , we need BuildRequires:
kdelibs5-devel or what ? 


[1] http://pkgs.fedoraproject.org/cgit/smb4k.git/tree/smb4k.spec

Thanks,  
-- 
Sérgio M. B.