I talked with Sarah in IRC (thanks for the quick response, Sarah!), and
we discovered it was because I had set =GOROOT= to
="${GUIX_PROFILE}/share/go". Go will set =${GOTOOLS}= relative to this
path.Since Guix sets both of these to sensible defaults, I was able to remove the customization and things went back to working as normal. Sorry for the noise, and I hope this helps some future person! -- Katherine
