ci: create paremeterised workflow for v2 packages

Author: galargh

.github/workflows/hardhat-ci.yml

@@ -0,0 +1,107 @@
+name: CI
+
+on:
+  push:
+    branches: main
+    paths:
+      - ".github/workflows/hardhat-ci.yml"
+      - "packages/**"
+      - "config/**"
+  pull_request:
+    paths:
+      - ".github/workflows/hardhat-ci.yml"
+      - "packages/**"
+      - "config/**"
+  workflow_dispatch:
+
+concurrency:
+  group: ${{github.workflow}}-${{github.ref}}
+  cancel-in-progress: true
+
+jobs:
+  list-packages:
+    name: List packages
+    runs-on: ubuntu-latest
+    outputs:
+      packages: ${{ steps.filter.outputs.changes }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 18
+      - run: yq -p yaml -o json pnpm-lock.yaml | tee pnpm-lock.json
+      - id: generate
+        env:
+          PACKAGE_IGNORE: |
+            [
+              ".",
+              "v-next/",
+              "packages/common",
+              "packages/eslint-plugin-hardhat-internal-rules",
+              "packages/eslint-plugin-slow-imports",
+              "packages/hardhat-core"
+            ]
+          COMMON_FILTERS: |
+            [
+              ".github/workflows/hardhat-ci.yml",
+              "config/**",
+              "packages/common/**"
+            ]
+        run: |
+          echo "filters<<EOF" >> $GITHUB_OUTPUT
+          node scripts/generate-filters.js |
+            yq -Po yaml 'with_entries(.key |= sub("^packages/", ""))' |
+            tee -a $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+      - id: filter
+        uses: dorny/paths-filter@de90cc6fb38fc0963ad72b210f1f284cd68cea36 # v3.0.2
+        with:
+          filters: ${{ steps.generate.outputs.filters }}
+
+  ci:
+    needs: list-packages
+
+    if: needs.list-packages.outputs.packages != '[]'
+
+    strategy:
+      fail-fast: false
+      matrix:
+        package: ${{ fromJson(needs.list-packages.outputs.packages) }}
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        node: [18, 20, 22]
+        exclude:
+          - package: hardhat-vyper
+            os: windows-latest
+          - package: hardhat-vyper
+            os: macos-latest
+          - os: windows-latest
+            node: 20
+          - os: macos-latest
+            node: 20
+          - os: windows-latest
+            node: 22
+          - os: macos-latest
+            node: 22
+
+    name: "[${{ matrix.package }}] ci on ${{ matrix.os }} (Node ${{ matrix.node }})"
+    runs-on: ${{ matrix.os }}
+    defaults:
+      run:
+        working-directory: packages/${{ matrix.package }}
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install pnpm
+        uses: pnpm/action-setup@v3
+        with:
+          version: 9
+      - uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node }}
+          cache: "pnpm"
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile --prefer-offline
+      - name: Build
+        run: pnpm build
+      - name: Run tests
+        run: pnpm run ${{ matrix.package == 'hardhat-chai-matchers' && 'test:ci' || 'test' }}