Upgrade to unstable2507 (#1029)

This upgrades polkadot-sdk crates to the latest version of
`unstable2507`. The main change is the following backport:
paritytech/polkadot-sdk#10552.

This is an important step for upgrading the Kusama AH runtime to the
latest version of pallet-revive with:
- EVM backend
- Ethereum block storage
- New gas mapping

---------

Co-authored-by: Clara van Staden <[email protected]>
Co-authored-by: Alexander Theißen <[email protected]>

Author: 3 people

.github/actions/get-solc/action.yml

@@ -0,0 +1,57 @@
+name: "Install Solidity Compiler"
+description: "Installs the Ethereum solc Solidity compiler frontend executable"
+
+runs:
+  using: "composite"
+  steps:
+    - name: Define versions
+      shell: bash
+      run: |
+        echo "SOLC_NAME=solc-static-linux" >> $GITHUB_ENV
+        echo "SOLC_VERSION=0.8.30" >> "$GITHUB_ENV"
+        echo "RESOLC_VERSION=0.5.0" >> "$GITHUB_ENV"
+
+    # Cache both folders. Keyed by OS and versions.
+    - name: Cache solc + resolc
+      uses: actions/cache@v4
+      with:
+        path: |
+          solc
+          resolc
+        key: solc-${{ runner.os }}-${{ env.SOLC_VERSION }}-${{ env.SOLC_NAME }}__resolc-${{ runner.os }}-${{ env.RESOLC_VERSION }}
+
+    - name: Download Solc (if missing)
+      shell: bash
+      run: |
+        mkdir -p solc
+        if [[ -x solc/solc ]]; then
+          echo "solc already present, skipping download"
+          exit 0
+        fi
+        curl -Lsf --show-error --retry 5 --retry-all-errors --connect-timeout 10 --max-time 300 \
+          --output solc/solc \
+          "https://github.com/ethereum/solidity/releases/download/v${SOLC_VERSION}/${SOLC_NAME}"
+        chmod +x solc/solc
+
+    - name: Install resolc (if missing)
+      shell: bash
+      run: |
+        mkdir -p resolc
+
+        if [[ -x resolc/resolc ]]; then
+          echo "resolc already present, skipping download"
+          exit 0
+        fi
+
+        ASSET_URL="https://github.com/paritytech/revive/releases/download/v${RESOLC_VERSION}/resolc-x86_64-unknown-linux-musl"
+        curl -Lsf --show-error --retry 5 --retry-all-errors --connect-timeout 10 --max-time 300 \
+          --output resolc/resolc \
+          "$ASSET_URL"
+        chmod +x resolc/resolc
+        ./resolc/resolc --version
+
+    - name: Add to PATH
+      shell: bash
+      run: |
+        echo "$PWD/solc" >> "$GITHUB_PATH"
+        echo "$PWD/resolc" >> "$GITHUB_PATH"

.github/workflows/clippy.yml

@@ -36,6 +36,9 @@ jobs:
         with:
           shared-key: "fellowship-cache-clippy"
           save-if: ${{ github.ref == 'refs/heads/main' }}
+      
+      - name: Install Solc
+        uses: ./.github/actions/get-solc
 
       - name: Clippy
         run: |

.github/workflows/test.yml

@@ -97,6 +97,8 @@ jobs:
           fi
         env:
           RUSTFLAGS: "-C debug-assertions -A warnings" # FAIL-CI AHM
+      - name: Install Solc
+        uses: ./.github/actions/get-solc
 
       - name: Test all features ${{ matrix.runtime.name }}
         run: cargo test -p ${{ matrix.runtime.package }} --release --locked -q --all-features

CHANGELOG.md

@@ -13,6 +13,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - asset-hub-polkadot: fix the regression in doc-test for staking after changing the base deposit for NPoS solution from 4 to 100 DOT ([#1023](https://github.com/polkadot-fellows/runtimes/pull/1023))
 - asset-hub-polkadot: increase the base deposit for a signed NPoS solution from 4 to 100 DOT, significantly mitigating the risk of transaction spamming ([#1022](https://github.com/polkadot-fellows/runtimes/pull/1022))
 - Adjust OpenGov parameters based on WFC 1701 ([polkadot-fellows/runtimes/pull/873](https://github.com/polkadot-fellows/runtimes/pull/873))
+- asset-hub-kusama: update to latest version of pallet-revive with EVM backend ([polkadot-fellows/runtimes/pull/1029](https://github.com/polkadot-fellows/runtimes/pull/1029))
 
 ### Added