this derivation will be built:
  /nix/store/ab7lgkwb2lsdwbyl1lw96sljpzxdnwv2-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/ab7lgkwb2lsdwbyl1lw96sljpzxdnwv2-bcachefs-module-7.0.0-38-generic.drv'...