Implement Feature Flags for Optional Blockchain Support #584
Description
Describe the feature
Add Cargo feature flags to allow compiling the relayer with only the blockchain(s) needed for a specific deployment. This will significantly reduce compilation time and binary size for single-blockchain deployments while maintaining full backward compatibility.
Goals
- Reduce compilation time:
- Reduce Binary size
- Backward compatible: Default behavior includes all blockchains
- Flexibility: Support any combination of EVM, Solana, and Stellar
Proposed Solution
Add three optional features to Cargo.toml:
- evm - Ethereum Virtual Machine support (Alloy, etc)
- solana - Solana blockchain support
- stellar - Stellar blockchain support (Soroban)
Default: All three enabled (backward compatible)
Additional context
No response