Unable to use security key to commit signing using SSH keypair

Hello fellows!

I'm able to sign commits using SSH keypair, but the keypair must be located in a file. If I try to use a SSH keypair in a security key (like an YubiKey) I get an error. I used this commands to do the test: ``` ssh-keygen -t ed25519-sk -f ~/.ssh/id_ed25519_sk git config --global gpg.format ssh git config --global user.signingkey "$(cat ~/.ssh/id_ed25519_sk.pub)" git commit -S --allow-empty --message="Testing" ```

Bnd I get this error: ``` error: Couldn't load public key sk-ssh-ed25519@openssh.com <my key id>: No such file or directory?

fatal: failed to write commit object ``` I did the same thing with a plain ed25519 keypair and worked.

Am I doing anything wrong or security keys aren't supported yet?

Thank you for any help,