Hi Maxime,

Copy that, I can swap the 'prefix'es out for '='s. Would it be best to 
do that for all of them, to totally isolate the derivation from the 
environment?

No rush on reviewing, thank You for spending so much time on this with 
me. I have learned a lot about Guix packages working through this; 
Hopefully I can use that knowledge to help out more often.

--

Christopher Rodriguez