this derivation will be built:
  /nix/store/21dcjzzqqfmgb5q6h7pxm5py6hqlfvlq-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/21dcjzzqqfmgb5q6h7pxm5py6hqlfvlq-bcachefs-module-7.0.0-39-generic.drv'...