this derivation will be built:
  /nix/store/6r3gfwfh9ks6nwfwaijn6x9ny33hafwy-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/6r3gfwfh9ks6nwfwaijn6x9ny33hafwy-bcachefs-module-7.0.0-39-generic.drv'...