How to permanently modify guix pull

[brettg]

Hey all, I am looking to try and modify where `guix pull` looks for the 
channels.scm file. I know about the -C flag, but is there a way to make 
this permanent so I do not have to append it manually? I would think 
maybe it would be part of the substitute urls like modifying the guix 
daemon service, but I can not find anything. Any help?

Brett Gilio