this derivation will be built:
  /nix/store/djpv9q6sf8f05fxrxh3285svv40v9d5g-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/djpv9q6sf8f05fxrxh3285svv40v9d5g-bcachefs-module-7.0.0-39-generic.drv'...