this derivation will be built:
  /nix/store/b9gch129rcgz4b46vr1zkvizg0w8jndh-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/b9gch129rcgz4b46vr1zkvizg0w8jndh-bcachefs-module-7.0.0-38-generic.drv'...