this derivation will be built:
  /nix/store/7jx8dwnignpa7rsmsy864adadch8byvf-bcachefs-module-7.0.0-30-generic.drv
building '/nix/store/7jx8dwnignpa7rsmsy864adadch8byvf-bcachefs-module-7.0.0-30-generic.drv'...