Implements vendoring CI.

Author: dom96

.github/workflows/vendoring.yml

@@ -0,0 +1,35 @@
+name: Python Workers Vendoring CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  vendoring:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.12'
+
+      - name: Run vendoring script (Linux/macOS)
+        if: runner.os != 'Windows'
+        run: ./.github/workflows/vendoring/unix.sh
+        shell: bash
+
+      - name: Run vendoring script (Windows)
+        if: runner.os == 'Windows'
+        continue-on-error: true
+        run: .github\workflows\vendoring\windows.bat

.github/workflows/vendoring/unix.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+cd 06-vendoring
+python3.12 -m venv .venv
+source .venv/bin/activate
+.venv/bin/pip install pyodide-build
+.venv/bin/pyodide venv .venv-pyodide
+.venv-pyodide/bin/pip install -t src/vendor -r vendor.txt
+
+if [ -z "$(ls -A src/vendor)" ]; then
+  echo "Vendoring failed: No files in src/vendor"
+  exit 1
+fi
+
+echo "Vendoring succeeded, listing files in src/vendor..."
+command -v tree &>/dev/null && tree src/vendor || find src/vendor

.github/workflows/vendoring/windows.bat

@@ -0,0 +1,16 @@
+@echo off
+
+cd 06-vendoring
+python -m venv .venv
+call .venv\Scripts\activate
+.venv\Scripts\pip install pyodide-build
+.venv\Scripts\pyodide venv .venv-pyodide
+.venv-pyodide\Scripts\pip install -t src/vendor -r vendor.txt
+
+if not exist src\vendor\* (
+  echo Vendoring failed: No files in src/vendor
+  exit /b 1
+)
+
+echo Vendoring succeeded, listing files in src/vendor...
+tree /f /a src\vendor

06-vendoring/README.md

@@ -12,6 +12,8 @@ Vendored packages are added to your source files and need to be installed in a s
 
 ### Vendoring Packages
 
+[//]: # (NOTE: when updating the instructions below, be sure to also update the vendoring.yml CI workflow)
+
 First, install Python3.12 and pip for Python 3.12.
 
 *Currently, other versions of Python will not work - use 3.12!*