Why is db backend set at compile time and not via flag '--db_backend'. How do I application db set to rocksdb?

[ylsGit]

Summary of Bug

https://github.com/cosmos/cosmos-sdk/blob/master/types/utils.go#L15
https://github.com/cosmos/cosmos-sdk/blob/master/types/utils.go#L88

Version

Steps to Reproduce

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[tac0turtle]

This is done to avoid needing to compile every db into the binary.

you can install is like so COSMOS_BUILD_OPTIONS=rocksdb ENABLE_ROCKSDB=true make install something changed recently that makes it require the second flag