this derivation will be built:
  /nix/store/fhqp5bpx8h9zrq915c035v1w4g2999vd-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/fhqp5bpx8h9zrq915c035v1w4g2999vd-bcachefs-module-7.0.0-39-generic.drv'...