this derivation will be built:
  /nix/store/i7a8hrj1ml6lhv554gsv5asikw3wx7vz-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/i7a8hrj1ml6lhv554gsv5asikw3wx7vz-bcachefs-module-7.0.0-39-generic.drv'...