lwk 0.1.6

A dart/flutter library with language bindings for rust library [lwk](https://github.com/Blockstream/lwk) - Liquid Wallet Kit.

lwk

A dart/flutter library with language bindings for rust library lwk - Liquid Wallet Kit.

BREAKING CHANGE FROM 0.1.3 -> 0.1.4

If you are currently using 0.1.3 - updating to 0.1.4 will create a breaking change that will make it difficult for you to spend your existing utxos.

If you are using 0.1.3 sweep your wallets before updating.

legacy branch

To access legacy 0.1.3 wallets, use the legacy branch.

Usage

Initialize the library once, in main()

await LibLwk.init();

This will load the binary. It does not need to be called again.

Now use the library as usual. See test/lwk_root_test.dart

Dependencies

Docker is required for linux builds.

dart pub global activate ffigen
cargo install flutter_rust_bridge_codegen --version 2.0.0
cargo install cargo-expand
cargo install cargo-ndk
@if [ $$(uname) == "Darwin" ] ; then cargo install cargo-lipo ; fi

For ios builds, make sure you have xcode installed.

Update & Build process

Add new types to types.rs and static functions to api.rs

api.rs contains an Api struct that holds all the static functions.

types.rs structures and enums are also re-exported via api.rs

# in the project root directory

./compile.native.sh # build for your native platform (linux/macos). adds binary to dart test folder.

MacOS as host

macos as the host machine can build binaries for all platforms using:

# requires dockerd running
./compile.all.sh

Compile will first build native binaries of the rust code and move them to the dart test folder.

It will then run flutter_rust_bridge_codegen and generate ffi code in rust and dart.

Non-debian linux users

On non-debian systems you will get some errors with the bridge_generated.dart files.

Error would be related to:

  void store_dart_post_cobject(
    int ptr,
  ) {
    return _store_dart_post_cobject(
      ptr,
    );
  }

You may need to set the path the clang in CPATH manually. Run the following:

export CPATH="$(clang -v 2>&1 | grep "Selected GCC installation" | rev | cut -d' ' -f1 | rev)/include"