this derivation will be built:
  /nix/store/8j969w09abnh0gd5hkmgzh21f7i6g519-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/8j969w09abnh0gd5hkmgzh21f7i6g519-bcachefs-module-7.0.0-39-generic.drv'...