Hi Pierre,

> Yes, last time I tried I had a similar issue: this is because you need
> the latest guile-sdl2 and guile-opengl.

There does not seem to be a more recent guile-opengl.  I have added
guile-sdl2-devel, which is built from the latest git commit.

I also updated guile-chickadee to use the latest version from git.
Unfortunately, it still won’t build.

> As I mentioned in an e-mail I've sent recently, I'd like to update the 2
> package definitions in Guix and add Chickadee to the Guix repo.
> What do you think?

I’d prefer to use only released versions in Guix unless it cannot be
avoided to use development versions.

-- 
Ricardo