this derivation will be built:
  /nix/store/s70vlq5fhsby6fn0z5966wziyz9y02l8-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/s70vlq5fhsby6fn0z5966wziyz9y02l8-bcachefs-module-7.0.0-38-generic.drv'...