Hi, me@stephane.today skribis: > 1. &store-protocol-error: > message: "some substitutes for the outputs of derivation > `/gnu/store/3y1srgsy38y6p2q6wyjw19d5vv5grdl7-guile-git-0.5.1.drv' failed > (usually happens due to networking issues); try `--fallback' to build > derivation from source " It seems that the problem was likely caused by a transient networking error. Could you try again? Thanks, Ludo’.