this derivation will be built:
  /nix/store/gj9wnw8qb807bs9szn2ndgi7zjplmrsw-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/gj9wnw8qb807bs9szn2ndgi7zjplmrsw-bcachefs-module-7.0.0-38-generic.drv'...