this derivation will be built:
  /nix/store/km9cm7nx54vva44z8z6y4wrz5c29rir0-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/km9cm7nx54vva44z8z6y4wrz5c29rir0-bcachefs-module-7.0.0-29-generic.drv'...