Use a pure rust secp256k1 implementation

[luca992]

secp256k1 depends on secp256k1-sys a c wrapper. It has caused me build issues like having to update clang on my mac as well as being incompatible with rust-optimizer. Is there any reason to not use a pure rust implementation like k256? Plus it would be one less dependency since k256 is already a dependency of secret-cosmwasm-crypto

[ClaudeShannon16]

Same problem here, would much appreciate a pure rust implementation

[luca992]

Fyi contracts with secret-cosmwasm-crypto can't be uploaded on chain anymore after a cargo update

after version 1.1.10 of cc they added shlex which causes:

Err(StaticValidationErr { msg: "Wasm contract requires unsupported import: \\"env.rustsecp256k1_v0_8_1_context_preallocated_size\\"

cc is a dependency of secp256k1-sys

You have to force cc to a lower version now:

cc = { version = "=1.1.10" }

example

[es-erick-calder]

how disheartening that this issue remains open and unaddressed, after well over 2 years. I've spent hours and hours struggling to build a contract with permits, specifically unable for this reason. I'm starting to regret having made a commitment to SN. it seems like it isn't really a thing