Create a setup script

Author: tgross35

.github/workflows/main.yaml

@@ -152,6 +152,11 @@ jobs:
       if: matrix.os == 'ubuntu-24.04'
       run: python3 etc/update-api-list.py --check
 
+    - name: Windows CI setup
+      if: matrix.os == 'windows-2025'
+      shell: bash
+      run: ./ci/setup-windows.sh ${{ matrix.target }}
+
     # Non-linux tests just use our raw script
     - name: Run locally
       if: matrix.os != 'ubuntu-24.04'

ci/setup-windows.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+set -eux
+
+ls /
+ls /c/msys64
+
+export PATH="/c/msys64:$PATH"
+
+pacman install m4
+
+mv -h