040000 tree 685c4f89d05e2bf0361685041605debdb6675c13	engine
040000 tree 8c9054d18c109f5129b39085b38e2488e8a432ec	intrinsics
040000 tree c2acaa258b23929ea7e79787a68fd3e0a6b76298	prelude
040000 tree 77c4fbb5c9a017406b4f0a53cbd28bd7a8ba48e8	stdlib