feat: add bdk_wallet_tx bridge crate (workspace)

.github/workflows/rust.yml

@@ -17,8 +17,8 @@ jobs:
           - version: stable
           - version: 1.85.0
         features:
-          - --no-default-features --features miniscript/no-std
-          - --all-features
+          - -p bdk_tx --no-default-features --features miniscript/no-std
+          - --workspace --all-features
     steps:
       - uses: actions/checkout@v6
       - name: Install Rust
@@ -46,7 +46,7 @@ jobs:
           toolchain: stable
           cache: true
       - name: Check no-std
-        run: cargo check --no-default-features --features miniscript/no-std
+        run: cargo check -p bdk_tx --no-default-features --features miniscript/no-std
 
   fmt-clippy:
     runs-on: ubuntu-latest
@@ -61,4 +61,4 @@ jobs:
       - name: Rust fmt
         run: cargo fmt --all -- --check
       - name: Clippy
-        run: cargo clippy --all-targets --all-features -- -Dwarnings
+        run: cargo clippy --workspace --all-targets --all-features -- -Dwarnings

Cargo.toml

@@ -1,43 +1,3 @@
-[package]
-name = "bdk_tx"
-version = "0.2.0"
-edition = "2021"
-rust-version = "1.85.0"
-homepage = "https://bitcoindevkit.org"
-repository = "https://github.com/bitcoindevkit/bdk-tx"
-documentation = "https://docs.rs/bdk_tx"
-description = "Bitcoin transaction building library."
-license = "MIT OR Apache-2.0"
-readme = "README.md"
-
-[lints.rust]
-unexpected_cfgs = { level = "warn", check-cfg = ['cfg(coverage_nightly)'] }
-
-[dependencies]
-# TODO: coin-select dependency should set no default features
-bdk_coin_select = { version = "0.4.1" }
-miniscript = { version = "12.3.7", default-features = false }
-rand_core = { version = "0.6.4", default-features = false }
-rand = { version = "0.8", optional = true }
-
-[dev-dependencies]
-anyhow = "1"
-bdk_tx = { path = "." }
-bitcoin = { version = "0.32.10", default-features = false, features = ["rand-std"] }
-bdk_testenv = "0.13.0"
-bdk_bitcoind_rpc = "0.22.0"
-bdk_chain = { version = "0.23.3" }
-
-[features]
-default = ["std"]
-std = ["miniscript/std", "rand/std", "bdk_coin_select/std"]
-
-[[example]]
-name = "synopsis"
-
-[[example]]
-name = "common"
-crate-type = ["lib"]
-
-[[example]]
-name = "anti_fee_sniping"
+[workspace]
+members = ["tx", "wallet_tx"]
+resolver = "2"

README.md

@@ -1,22 +1,25 @@
-# `bdk_tx`
+# bdk-tx workspace
 
-This is a transaction building library based on `rust-miniscript` that lets you build, update, and finalize PSBTs with minimal dependencies.
+A Cargo workspace with two crates:
 
-<!-- links to relevant literature -->
-Because the project builds upon [miniscript] we support [descriptors] natively.
+- [`tx/`](tx) -- **`bdk_tx`**, a low-level Bitcoin transaction-building library (coin selection,
+  tx-template shaping, PSBT emission and finalization). See [`tx/README.md`](tx/README.md).
+- [`wallet_tx/`](wallet_tx) -- **`bdk_wallet_tx`**, a bridge crate that drives `bdk_tx`'s multi-stage
+  transaction building from a `bdk_wallet::Wallet` via the `WalletTxExt` extension trait. See
+  [`wallet_tx/README.md`](wallet_tx/README.md).
 
-Refer to [BIP174], [BIP370], and [BIP371] to learn more about partially signed bitcoin transactions (PSBT).
+`wallet_tx` depends on both `bdk_wallet` and `bdk_tx`, so neither base crate depends on the other:
+`bdk_wallet` stays stable, `bdk_tx` stays free to move, and the bridge absorbs the coupling.
 
-**Note:**
-The library is unstable and API changes should be expected. Check the [examples] directory for detailed usage examples.
+## Building
 
+```sh
+cargo build --workspace
+cargo test --workspace
+```
 
-## Contributing
-Found a bug, have an issue or a feature request? Feel free to open an issue on GitHub. This library is open source licensed under MIT.
+`bdk_tx` additionally supports `no_std`:
 
-[miniscript]: https://github.com/bitcoin/bips/blob/master/bip-0379.md
-[descriptors]: https://github.com/bitcoin/bitcoin/blob/master/doc/descriptors.md
-[BIP174]: https://github.com/bitcoin/bips/blob/master/bip-0174.mediawiki
-[BIP370]: https://github.com/bitcoin/bips/blob/master/bip-0370.mediawiki
-[BIP371]: https://github.com/bitcoin/bips/blob/master/bip-0371.mediawiki
-[examples]: ./examples
+```sh
+cargo check -p bdk_tx --no-default-features --features miniscript/no-std
+```