this derivation will be built:
  /nix/store/k940qzcsy9806ddvl178i184v2g16naz-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/k940qzcsy9806ddvl178i184v2g16naz-bcachefs-module-7.0.0-38-generic.drv'...