this derivation will be built:
  /nix/store/j77mqcimvzv5xaxpds5irw9axin3azw6-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/j77mqcimvzv5xaxpds5irw9axin3azw6-bcachefs-module-7.0.0-39-generic.drv'...