Am 22.04.2016 12:48 schrieb <waldeck@gmx.de>:
>
> Hi Daniel,
>
> thanks for your feedback.
>
> > gnupg-agent is the only way to use secret keys in the modern version of
> > gnupg (for decryption or signing). this isn't a "convenience function",
> > but rather a main purpose of gnupg itself.
> Okay, thanks for the clarification.
> Maybe I got it wrong due to the fact that it is a dedicated package.
>
> > It's not clear to me why apt would require the full gpg for regular use
> > at all -- it should only need gpgv to verify the Release files.
> > Maybe the apt folks (cc'ed here) can tell us why gnupg is a Depends:
> > instead of a Recommends: for apt?
>
> Julian, Michael, David, ... any ideas from your side?
>
IIRC, APT needs to merge keyrings die to gpg's number of keyrings limit and adding keys the old way with apt-key should work too.