Yo Joshua ! Thank you for taking the time to answer my question. I really appreciate it !
Actually, my "genius" haha is working on a little script to pop a Guix VM tailored to remotely pair-program with one or more Guiler(s)/Schemer(s)/Guixter(s) ! After the hard work, the VM is deleted. So right now, I am struggling to provide Emacs with a configuration through the system definition. The more Guix can do for me the better I am. Because Emacs has to download and create files into .emacs.d, the folder has to be writable. Until I find something clever, I will run a second script inside the VM to clone the configuration and pull the Guix sources (so we can contribute to Guix as well!) PS: do you want to pair ? ;-) Jérémy