this derivation will be built:
  /nix/store/31f33wfnpafz1zwdp356skk1pigdm3v9-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/31f33wfnpafz1zwdp356skk1pigdm3v9-bcachefs-module-7.0.0-31-generic.drv'...