this derivation will be built:
  /nix/store/hf47ar0dp2a5b18kxa12bpvg6242g965-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/hf47ar0dp2a5b18kxa12bpvg6242g965-bcachefs-module-7.0.0-29-generic.drv'...