this derivation will be built:
  /nix/store/8xh00wdgnbflhgisa3zpk39xb5k5vxi7-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/8xh00wdgnbflhgisa3zpk39xb5k5vxi7-bcachefs-module-7.0.0-29-generic.drv'...