[FEATURE REQUEST] Provide more details after a key signature failure

[QuentinFAIDIDE]

Version

pacaur -v

pacaur 4.8.6

Description

A pgp public key is missing to sucessfully verify java-qdox AUR package integrity on both my computers. One is running paru (another aur helper), and another pacaur. While paru displayed a message about the missing pgp key, pacaur failed with a " failed to verify integrity or prepare java-qdox". I think it could be great if pacaur could be a bit more verbose by default about the signature failure reason.

Output

pacaur -S java-qdox

failed to verify integrity or prepare java-qdox

Debug output

Can't provide as I added the required pgp key and it now works.