logos-evm-wallet-backend-module

The coordinator for the Logos multi-chain EVM wallet (Rust, rust-first cdylib). It depends on eth_rpc_module, keystore_module, and token_list_module, and it also folds in the tx-builder (offline alloy ABI/tx construction).

It owns the central proxy + chain config (and pushes each chain's {endpoint, proxy, proxyRequired} down into eth_rpc), fetches multi-chain balances with Multicall3 (one eth_call per chain, falling back to per-call), orchestrates sends (build → sign → broadcast → record), and stores this wallet's own transaction history (the only history available without a proprietary indexer).

Contract (WalletBackendModule)

Config: set_proxy_config/get_proxy_config, set_chains/get_chains, test_endpoint. Accounts: create_account, import_mnemonic, list_accounts, unlock/lock. Watched tokens: set_watched_tokens/get_watched_tokens. Tokens: get_tokens, add_custom_token. Balances: refresh_balances, get_balances. Send: estimate_fee, send_native, send_erc20. History: get_history, refresh_tx_status. Events: balances_updated, tx_status_changed, proxy_error.

Build & test

cd rust-lib && cargo test --no-default-features   # tx-builder (incl. Multicall3), config, history
nix build .#install                                # -> result/modules/wallet_backend_module/

Building the full module pulls the three dependency modules' published .lidl contracts to generate the typed modules().<dep> clients. In the Logos workspace they resolve via flake follows/--override-input to local checkouts.