this derivation will be built:
  /nix/store/w4h8xa0var59gp97fm4251q1x3y7mjrq-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/w4h8xa0var59gp97fm4251q1x3y7mjrq-bcachefs-module-7.0.0-29-generic.drv'...