fix: install PyPy on Linux ARM64 (#1011)

* ci: check non-eol versions of PyPy are available on all runners

* fix: install PyPy on Linux ARM64

* ci: remove eol ubuntu-20.04

.github/workflows/test-pypy.yml

@@ -69,6 +69,59 @@ jobs:
           ${EXECUTABLE} --version
         shell: bash
 
+  check-non-eol:
+    name: Check non-eol ${{ matrix.pypy }} on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - macos-13
+          - macos-14
+          - macos-15
+          - windows-2019
+          - windows-2022
+          - windows-2025
+          - ubuntu-22.04
+          - ubuntu-24.04
+          - ubuntu-22.04-arm
+          - ubuntu-24.04-arm
+        pypy: ['pypy-2.7', 'pypy-3.10']
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: setup-python ${{ matrix.pypy }}
+        id: setup-python
+        uses: ./
+        with:
+          python-version: ${{ matrix.pypy }}
+
+      - name: Check python-path
+        run: ./__tests__/check-python-path.sh '${{ steps.setup-python.outputs.python-path }}'
+        shell: bash
+
+      - name: PyPy and Python version
+        run: python --version
+
+      - name: Run simple code
+        run: python -c 'import math; print(math.factorial(5))'
+
+      - name: Assert PyPy is running
+        run: |
+          import platform
+          assert platform.python_implementation().lower() == "pypy"
+        shell: python
+
+      - name: Assert expected binaries (or symlinks) are present
+        run: |
+          EXECUTABLE=${{ matrix.pypy }}
+          EXECUTABLE=${EXECUTABLE/pypy-/pypy}  # remove the first '-' in "pypy-X.Y" -> "pypyX.Y" to match executable name
+          EXECUTABLE=${EXECUTABLE%%-*}  # remove any -* suffixe
+          ${EXECUTABLE} --version
+        shell: bash
+
   setup-pypy-noenv:
     name: Setup PyPy ${{ matrix.pypy }} ${{ matrix.os }} (noenv)
     runs-on: ${{ matrix.os }}