this derivation will be built:
  /nix/store/fhm093l843d67gxq53h73gsywv7naf9b-bcachefs-module-7.0.0-34-generic-64k.drv
building '/nix/store/fhm093l843d67gxq53h73gsywv7naf9b-bcachefs-module-7.0.0-34-generic-64k.drv'...