this derivation will be built:
  /nix/store/y14zw186pymwhsqvw9b4jfmp49gh6vxh-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/y14zw186pymwhsqvw9b4jfmp49gh6vxh-bcachefs-module-7.0.0-39-generic.drv'...