[llvm] [libclang/python][ci] Add release Clang Python Bindings CI workflow (PR #168234)

[Ryan Mast via llvm-commits]

================
@@ -0,0 +1,111 @@
+name: Release Clang Python Bindings
+
+permissions:
+  contents: read
+
+on:
+  push:
+    branches:
+      - main
+      - release/*
+    paths:
+      - .github/workflows/release-clang-pypi.yml
+      - 'clang/bindings/python/**'
+
+  pull_request:
+    paths:
+      - .github/workflows/release-clang-pypi.yml
+      - 'clang/bindings/python/**'
+
+  workflow_dispatch:
+    inputs:
+      release-version:
+        description: 'Release Version'
+        required: false
+        type: string
+
+  workflow_call:
+    inputs:
+      release-version:
+        description: 'Release Version'
+        required: true
+        type: string
+    secrets:
+      RELEASE_TASKS_USER_TOKEN:
+        description: "Secret used to check user permissions."
+        required: false
+
+jobs:
+  build-release:
+    if: github.repository_owner == 'llvm' || github.event_name == 'workflow_dispatch'
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Checkout LLVM (tagged release)
+        if: inputs.release-version != ''
+        uses: actions/checkout at 08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        with:
+          ref: "llvmorg-${{ inputs.release-version }}"
+          fetch-depth: 0
+          sparse-checkout: clang/bindings/python/
+
+      - name: Checkout LLVM (latest commit)
+        if: inputs.release-version == ''
+        uses: actions/checkout at 08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        with:
+          fetch-depth: 0
+          sparse-checkout: clang/bindings/python/
+
+      - uses: actions/setup-python at e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
+        with:
+          python-version: '3.13'
+
+      - name: Package Clang Python Bindings
+        working-directory: clang/bindings/python
+        run: |
+          pip install build twine
----------------
nightlark wrote:

I added a locked requirements file, it requires Python 3.10 or newer though due to only the latest release of cffi (2.0.0) working with Python 3.14 (but that doesn't work with Python versions older than 3.10).

https://github.com/llvm/llvm-project/pull/168234