How to belatedly sign binary packages without re-emerge?

[nagmat84]

I have set up a build server with a chroot-environment for each of my clients. Initially, I did not enable binary packages signing. I have already re-emerged the entire world set via emerge --emptytree ... @world for each of my clients. Now, I finally have figured out how to get package signing to work. When I run emerge I get a properly signed binary package in /var/cache/binpkgs/.

How can a (belatedly) sign all the binary packages which are already there without re-emerging the entire world set once again? I found the option --buildpkgonly for emerge, but this still seems to re-emerge the provided package.

[eschwartz]

Portage comes with the "gpkg-sign" command as well. I believe that should do what you want.