How to use x/ed25519 with Quiche?

[catid]

Just got my C++ Quiche-based client/server application working today using RSA keys. This software library is awesome!

I'd prefer to be using ECC certificates.

For example this does not work:

openssl req -newkey ed25519:256 -nodes -keyout certificate.key -x509 -out certificate.pem -subj '/CN=Test Certificate'

But this works:

openssl req -newkey rsa:2048 -nodes -keyout certificate.key -x509 -out certificate.pem -subj '/CN=Test Certificate'

Any suggestions for how to do this properly?