this derivation will be built:
  /nix/store/j9fd2v5h0ssnx3w098759ibvrfgh9iqz-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/j9fd2v5h0ssnx3w098759ibvrfgh9iqz-bcachefs-module-7.0.0-31-generic.drv'...