this derivation will be built:
  /nix/store/63n70jfdpm9ll4zk0sbx69vs8yjw6yv7-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/63n70jfdpm9ll4zk0sbx69vs8yjw6yv7-bcachefs-module-7.0.0-39-generic.drv'...