Hi! The output you provided is not very descriptive, at least for me. For long logs you could use pastebin-like sites(e.g. https://paste.debian.net/ )
Try invoking "guix weather" it could help you identify if the problem is actually missing substitutes (see https://guix.gnu.org/manual/devel/en/html_node/Invoking-guix-weather.html ) Best regards, Lesik Edelweiss
