Does pamac search -a ruby-atk show it as [Installed] …? I’d suggest removing it if you don’t need it. It’s not on my system, anyway.
pamac remove ruby-atk
Cheers!
(And, welcome to the Community!). 
Does pamac search -a ruby-atk show it as [Installed] …? I’d suggest removing it if you don’t need it. It’s not on my system, anyway.
pamac remove ruby-atk
Cheers!
(And, welcome to the Community!).