this derivation will be built:
  /nix/store/sppb5254yhjrdkj9bwvwcgr7hfppkqjp-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/sppb5254yhjrdkj9bwvwcgr7hfppkqjp-bcachefs-module-7.0.0-39-generic.drv'...