--homedir in gnupg 2.1

[Nicholas Cole]

When management of the secret keys is moved to gpg-agent, will it
still be possible to mimic the effect of --homedir in previous
versions?

Currently, for a lot of testing I want a completely blank setup.  I
simply set --homedir to a temporary directory, and avoid affecting any
existing public or private keyrings.

In the same way, one might manage different identities (eg. home and
work) by doing this kind of thing.

How will this kind of thing work in gnupg 2.1?

Best wishes,

Nicholas