this derivation will be built:
  /nix/store/js94v3bw3fn6xw5cylxwcj95wwdbglqx-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/js94v3bw3fn6xw5cylxwcj95wwdbglqx-bcachefs-module-7.0.0-31-generic.drv'...