this derivation will be built:
  /nix/store/dmlfv8df26pzy10xhdv29r7bhs7z2f2s-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/dmlfv8df26pzy10xhdv29r7bhs7z2f2s-bcachefs-module-7.0.0-39-generic.drv'...