conflicts with librocksdb-sys

[idotial]

when i add a dependency which depended on rocksdb to a project depended on kvdb-rocksdb, it show error log while runing cargo update.
error: failed to select a version for parity-rocksdb-sys. ... required by package parity-rocksdb v0.5.0... which is depended on bykvdb-rocksdb v0.1.4... which is depended on bystorage v0.0.1 (/Users/chenrui/Desktop/blockchain/WendingWorkStation/ipfs/filesys-rust/runtime/storage)... which is depended on bybeacon v0.0.1 (/Users/chenrui/Desktop/blockchain/WendingWorkStation/ipfs/filesys-rust/chain/beacon)... which is depended on byclient v0.1.0 (/Users/chenrui/Desktop/blockchain/WendingWorkStation/ipfs/filesys-rust/chain/client)... which is depended on byalphanet v0.1.0 (/Users/chenrui/Desktop/blockchain/WendingWorkStation/ipfs/filesys-rust/chain/alphanet)... which is depended on bydevnet v0.1.0 (/Users/chenrui/Desktop/blockchain/WendingWorkStation/ipfs/filesys-rust/chain/devnet)... which is depended on byfilesys v0.1.0 (/Users/chenrui/Desktop/blockchain/WendingWorkStation/ipfs/filesys-rust)versions that meet the requirements^0.5` are: 0.5.5, 0.5.4, 0.5.3, 0.5.2, 0.5.1, 0.5.0

the package parity-rocksdb-sys links to the native library rocksdb, but it conflicts with a previous package which links to rocksdb as well:
package librocksdb-sys v5.17.2
... which is depended on by rocksdb v0.12.0
... which is depended on by filecoin-proofs v0.1.0 (https://github.com/idotial/rust-fil-proofs.git#53676171)
... which is depended on by filesys v0.1.0 (/Users/chenrui/Desktop/blockchain/WendingWorkStation/ipfs/filesys-rust)

failed to select a version for parity-rocksdb-sys which could resolve this conflict`

[idotial]

https://github.com/idotial/testlinks.git here is a example project, run cargo update will show the error.

[dvdplm]

Hmm, librocksdb-sys is not the same as parity-rocksdb-sys. I don't think you can use both bindings at the same time. The formatting in your ticket is a little hard to follow, and the example is a little too minimal to understand what it is you're trying to achieve.