this derivation will be built:
  /nix/store/mjbd9wybs839j5agvpx3jrv5gfrdsd94-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/mjbd9wybs839j5agvpx3jrv5gfrdsd94-bcachefs-module-7.0.0-39-generic.drv'...