this derivation will be built:
  /nix/store/mdpy54amp13hl95y5lhwjgl8jym3i3pb-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/mdpy54amp13hl95y5lhwjgl8jym3i3pb-bcachefs-module-7.0.0-39-generic.drv'...