On a guest VM running Debian, I noticed that its OpenGL is using the virgl renderer which provided hardware acceleration for OpenGL on the guest.. virglrenderer is available in GNU Guix as a package. I installed it but it is not active or used. I assume it must be configured somehow to serve as the guest VM gl driver.
Thus by default, GNU Guix running on a KVM guest only has software renderer and it does not get host GPU acceleration for OpenGL on the guest. I find no info in GNU Guix documentation on how to configure this. Anyone know how this can be done? Thanks