040000 tree 47dab8e1883feab2503b01cd593993d54b59c634	libyaml
040000 tree 63f7e25f3620fdea06569d4e94fe453bd6dba37d	nlohmann-json
040000 tree 19c60ccce78c0eff27c06d435189c91c015e24ce	rng-tools
040000 tree c4e21085af9788b4136880847672694d12e7c945	serialization