this derivation will be built:
  /nix/store/h34ynh4dr2fkmff2ly3y6vbp9mz421b6-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/h34ynh4dr2fkmff2ly3y6vbp9mz421b6-bcachefs-module-7.0.0-38-generic.drv'...