this derivation will be built:
  /nix/store/wg4vk7icr60zy371bx1vywdqavyrhp99-bcachefs-module-7.0.0-34-generic.drv
building '/nix/store/wg4vk7icr60zy371bx1vywdqavyrhp99-bcachefs-module-7.0.0-34-generic.drv'...