Update v5 contract interfaces and E2E client

.github/workflows/ci.yml

@@ -39,12 +39,6 @@ env:
   # this fix not yet in stable: https://github.com/rust-lang/rust-clippy/issues/8895.
   # Remove the following line again as soon as `clippy` on stable succeeds again.
   CLIPPY_ALLOWED:                  clippy::extra_unused_lifetimes
-  # We plan to fully support RISC-V as a bytecode for contracts soon.
-  # RISC-V does not have a standard library in contrast to Wasm. Compiling against
-  # this target also makes sure that we don't pull in `std` by accident (through dependencies).
-  # RISC-V is a modular architecture. We might switch to a different flavor with more features
-  # later. For example, `riscv32imc-unknown-none-elf`.
-  RISCV_TARGET:                    riscv32ema-unknown-none-elf
 
 concurrency:
   # Cancel in-progress jobs triggered only on pull_requests
@@ -230,7 +224,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        type: [STD, WASM, RISCV]
+        type: [STD, WASM]
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -261,17 +255,6 @@ jobs:
               --manifest-path ./crates/${crate}/Cargo.toml;
           done
 
-      - name: Check RISCV
-        if: ${{ matrix.type == 'RISCV-disabled' }}
-        env:
-          RUSTC_BOOTSTRAP: 1
-          RUSTUP_TOOLCHAIN: rve-nightly
-        run: |
-          for crate in ${ALSO_WASM_CRATES}; do
-            cargo check --no-default-features --target $RISCV_TARGET -Zbuild-std="core,alloc" \
-              --manifest-path ./crates/${crate}/Cargo.toml;
-          done
-
   dylint:
     runs-on: ubuntu-latest
     defaults:
@@ -617,15 +600,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        type: [WASM, RISCV]
+        type: [WASM]
         partition: [1, 2, 3, 4]
-        exclude:
-          - type: RISCV
-            partition: 2
-          - type: RISCV
-            partition: 3
-          - type: RISCV
-            partition: 4
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -658,22 +634,6 @@ jobs:
             popd
           fi
 
-      - name: Build Contract RISCV Examples
-        if: ${{ matrix.type == 'RISCV-disabled' }}
-        env:
-          RUSTC_BOOTSTRAP: 1
-          RUSTUP_TOOLCHAIN: rve-nightly
-        run: |
-          rustup component add rust-src --toolchain stable
-          cargo contract -V
-          # We skip some examples for those reasons:
-          # This uses dlmalloc which is only supported on select targets.
-          #   - custom_allocator
-          # Pulls in sp-std which needlessly requires atomic pointers (TODO: Fix sp-std and enable this example)
-          #   - call-runtime
-          scripts/for_all_contracts_exec.sh --path integration-tests --ignore public/custom-allocator --ignore public/call-runtime --ignore public/contract-xcm \
-            -- cargo build --manifest-path {} --no-default-features --target $RISCV_TARGET -Zbuild-std="core,alloc"
-
   examples-docs:
     runs-on: ubuntu-latest
     needs: [set-image, build]

CHANGELOG.md

@@ -9,6 +9,26 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Update the v5 lint compiler and Dylint dependencies for current Rust contracts.
 - Avoid a generated `clone_on_copy` warning without requiring account IDs to be `Copy`.
 
+### Breaking changes
+
+- Update contract host bindings to UAPI 14. `CallFlags::all()` and flag negation
+  now include `READ_ONLY`. Select the flags needed by a call explicitly; older
+  contracts pallets reject the new flag. RISC-V contract builds are no longer
+  supported; use the Wasm target.
+- Update SCALE encoding/decoding traits to `scale-encode` 0.10 and `scale-decode`
+  0.16. Custom environment types implementing `ink_env::CodecAsType` must use
+  these versions in `std` builds.
+- Update XCM types to 14.1. Builder arguments now accept convertible values;
+  remove redundant `.into()` calls where type inference becomes ambiguous.
+  `MAX_XCM_ENCODED_SIZE` is removed, XCM v2 is deprecated, and v3/v4 `OriginKind`
+  and `GetWeight` no longer share their v2 definitions. Code mixing these
+  definitions must use the types for its message version.
+- Update `ink_e2e` to Subxt 0.51. Custom integrations must update their Subxt
+  configurations, signers and event decoding. Client and test-node constructors
+  now require `Config: Default`, and `OnlineClient::tx()` is asynchronous. E2E
+  tests use `SubstrateConfig` by default; `PolkadotConfig` remains available for
+  the Polkadot relay chain.
+
 ## Version 5.1.1
 
 ## Fixed