CI improve nightly GHA workflow

.github/workflows/actions/prepare-binaries/README.md

@@ -0,0 +1,4 @@
+# Prepare polkadot and staking-miner-playground binaries
+
+This action downloads the Polkadot and Staking miner binaries produced from workflows
+`build-polkadot-for-nightly.yml` and `build-staking-miner-playground-for-nightly.yml` and puts them into the `$PATH`.

.github/workflows/actions/prepare-binaries/action.yml

@@ -0,0 +1,28 @@
+name: Prepare polkadot and staking-miner-playground binaries
+description: Downloads and configures prebuilt Polkadot and Staking Miner Playground binaries
+runs:
+  using: composite
+  steps:
+    - name: Download polkadot binaries
+      uses: dawidd6/action-download-artifact@e7466d1a7587ed14867642c2ca74b5bcc1e19a2d # v3.0.0
+      with:
+        workflow: build-polkadot-for-nightly.yml
+        name: nightly-polkadot-binary
+        path: ./tmp
+
+    - name: Download staking-miner-playground binary
+      uses: dawidd6/action-download-artifact@e7466d1a7587ed14867642c2ca74b5bcc1e19a2d # v3.0.0
+      with:
+        workflow: build-staking-miner-playground-for-nightly.yml
+        name: staking-miner-playground-binary
+        path: ./tmp
+
+    - name: Setup permissions and move to path
+      shell: bash
+      run: |
+        chmod u+x ./tmp/polkadot* ./tmp/staking-miner-playground
+        ./tmp/polkadot --version
+        ./tmp/staking-miner-playground --version
+        mkdir -p ~/.local/bin
+        mv ./tmp/polkadot* ~/.local/bin
+        mv ./tmp/staking-miner-playground ~/.local/bin

.github/workflows/build-polkadot-for-nightly.yml

@@ -0,0 +1,42 @@
+name: Build polkadot binary for nightly tests
+
+on:
+  # Allow it to be manually ran to rebuild binary when needed:
+  workflow_dispatch: {}
+  # Run at 22pm every day for nightly builds.
+  schedule:
+    - cron: "0 22 * * *"
+
+jobs:
+  tests:
+    name: Build polkadot binary
+    runs-on: ubuntu-latest
+    container: paritytech/ci-unified:bullseye-1.74.0-2023-11-01-v20231204
+    steps:
+      - name: checkout polkadot-sdk
+        uses: actions/checkout@v4
+        with:
+          repository: paritytech/polkadot-sdk
+
+      - name: Rust Cache
+        uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: |
+            polkadot
+          cache-on-failure: true
+
+      - name: build polkadot binary
+        run: |
+          cargo build -p polkadot --release --features fast-runtime
+          ./target/release/polkadot --version
+
+      - name: upload polkadot binary
+        uses: actions/upload-artifact@v3
+        with:
+          name: nightly-polkadot-binary
+          path: |
+            ./target/release/polkadot
+            ./target/release/polkadot-execute-worker
+            ./target/release/polkadot-prepare-worker
+          retention-days: 2
+          if-no-files-found: error

.github/workflows/build-staking-miner-playground-for-nightly.yml

@@ -0,0 +1,44 @@
+name: Build staking miner playground binary for nightly tests
+
+on:
+  # Run when changes to staking miner playground is made
+  push:
+    branches:
+      - main
+    paths:
+      - 'staking-miner-playground/**'
+  # Allow it to be manually ran to rebuild binary when needed:
+  workflow_dispatch: {}
+  # Run at 22pm every week on Sunday's for nightly builds.
+  schedule:
+    - cron: "0 22 1 * *"
+
+jobs:
+  tests:
+    name: Build staking-miner-playground
+    runs-on: ubuntu-latest
+    container: paritytech/ci-unified:bullseye-1.74.0-2023-11-01-v20231204
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4
+
+      - name: Rust Cache
+        uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: |
+            staking-miner-playground
+          cache-on-failure: true
+
+      - name: build staking-miner-playground binary
+        run: |
+          cd staking-miner-playground
+          cargo build --release --features test-trimming
+          ./target/release/staking-miner-playground --version
+
+      - name: upload staking-miner-playground binary
+        uses: actions/upload-artifact@v3
+        with:
+          name: staking-miner-playground-binary
+          path: ./staking-miner-playground/target/release/staking-miner-playground
+          retention-days: 31
+          if-no-files-found: error

.github/workflows/nightly.yml

@@ -1,4 +1,4 @@
-name: Daily compatibility check against latest polkadot
+name: Nightly test
 
 on:
   schedule:
@@ -8,21 +8,12 @@ on:
 jobs:
   nightly-test:
     runs-on: ubuntu-latest
-
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Free space on the runner
-        run: |
-          df -h
-          sudo apt -y autoremove --purge
-          sudo apt -y autoclean
-          sudo rm -rf /usr/share/dotnet
-          sudo rm -rf /opt/ghc
-          sudo rm -rf "/usr/local/share/boost"
-          sudo rm -rf "$AGENT_TOOLSDIRECTORY"
-          df -h
+      - name: Get Polkadot and Staking Miner Playground binaries
+        uses: ./.github/workflows/actions/prepare-binaries
 
       - name: Cache Rust dependencies
         uses: swatinem/rust-cache@v2
@@ -32,26 +23,7 @@ jobs:
 
       - name: Run nightly tests
         run: |
-          sudo apt install -y protobuf-compiler
-          rustup target add wasm32-unknown-unknown
-          rustup component add rust-src
-          git clone -b master --depth 1 https://github.com/paritytech/polkadot-sdk.git polkadot-sdk
-          cd polkadot-sdk
-          cargo build -p polkadot --release --features fast-runtime
-          mkdir -p ~/.local/bin
-          sudo mv ./target/release/polkadot /usr/bin
-          sudo mv ./target/release/polkadot-execute-worker /usr/bin
-          sudo mv ./target/release/polkadot-prepare-worker /usr/bin
-          polkadot --version
-          cd -
-          rm -rf polkadot
-          cd staking-miner-playground
-          cargo build --release --features test-trimming
-          sudo mv ./target/release/staking-miner-playground /usr/bin
-          staking-miner-playground --version
-          cd -
           RUST_LOG=info cargo test --workspace --all-features -- --nocapture
-          cargo clean
 
       - name: Create an issue on failure
         if: failure()
@@ -68,3 +40,4 @@ jobs:
           # Look for new *open* issues in this search (we want to
           # create a new one if we only find closed versions):
           search_existing: open
+