script to build all packages from a local channel?

[Alexis Simon]

Hi Guix,

I am wondering how I could easily make a script to build all packages 
that are defined in my local channel.

This would be an easy way to make a local "CI" to test changes without 
setting up a full fledged CI server.

I don't know where to start, any pointers or examples of small scripts 
doing that?

Thanks,
Alexis