this derivation will be built:
  /nix/store/v7rr5md99bf9sqyzq6wq9ncw1gg2lbl3-bcachefs-module-7.0.0-14-generic.drv
building '/nix/store/v7rr5md99bf9sqyzq6wq9ncw1gg2lbl3-bcachefs-module-7.0.0-14-generic.drv'...