this derivation will be built:
  /nix/store/fhvms38m1pbibq88bi9xfc8c1076ybq1-bcachefs-module-7.0.0-31-generic-64k.drv
building '/nix/store/fhvms38m1pbibq88bi9xfc8c1076ybq1-bcachefs-module-7.0.0-31-generic-64k.drv'...