this derivation will be built:
  /nix/store/5fn12cwymx0pqdkgylx2j2x4c5czq52y-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/5fn12cwymx0pqdkgylx2j2x4c5czq52y-bcachefs-module-7.0.0-31-generic.drv'...