gpg-agent managed SSH_AUTH_SOCK encounters signing error

[archen]

I'm using gpg-agent 2.2.1 with the --enable-ssh-support flag set, on macOS Sierra. When I attempt to assume a role using Hologram, I receive the error message:

agent: failed to sign challenge

When I switch my SSH_AUTH_SOCK back over to the standard ssh-agent everything works fine again. Hologram is the only software that I've encountered issues with where gpg-agent will not operate as a drop-in replacement for ssh-agent, so I'm assuming that the problem is not with my configuration.

Any ideas?

[sometheycallme]

close the issue, it's been two years.