I discovered additional dependency errors by doing:
in reply to Re: Padre Install: Warning: prerequisite Debug::Client 0.20 not found.
in thread Padre Install: Warning: prerequisite Debug::Client 0.20 not found.
cpan -f -i Test::Class
Those got remedied in doing:
cpanp -i Debug::Client Padre --allow_build_interactivity=0 --skiptest=0 --force --prereqs=1
Padre installed successfully. It seems PadWalker was missing on my system, too, but the interactive install allowed me to fix it.
Thanks to all for timely positive contributions.