this derivation will be built:
  /nix/store/q6hkak14ppzlg9nlafz7yr25vmmz1z18-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/q6hkak14ppzlg9nlafz7yr25vmmz1z18-bcachefs-module-7.0.0-39-generic.drv'...