this derivation will be built: /nix/store/38gf63hv0l7v2i6946f65p3nfqhf63hn-bcachefs-module-7.0.0-31-generic.drv building '/nix/store/38gf63hv0l7v2i6946f65p3nfqhf63hn-bcachefs-module-7.0.0-31-generic.drv'...