this derivation will be built:
  /nix/store/5l2sd260prz4fv2sisbhz261bzy6y6dr-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/5l2sd260prz4fv2sisbhz261bzy6y6dr-bcachefs-module-7.0.0-29-generic.drv'...