Downgrade Win SDK to 10.0.22621.0

Author: ChrisDenton

.github/workflows/ci.yml

@@ -78,6 +78,21 @@ jobs:
         # Check the `calculate_matrix` job to see how is the matrix defined.
         include: ${{ fromJSON(needs.calculate_matrix.outputs.jobs) }}
     steps:
+      # Temporary fix to unblock CI
+      # We revert to an older Windows SDK for 32-bit Windows MSVC builds.
+      # See issue https://github.com/rust-lang/rust/issues/137733 for more details.
+      - name: Downgrade Windows SDK
+        shell: pwsh
+        if: ${{ matrix.name == 'i686-msvc-1' || matrix.name == 'i686-msvc-2' || matrix.name == 'dist-i686-msvc' }}
+        run: |
+          echo ";c:/msys64/usr/bin" >> $env:GITHUB_PATH
+          $vs = &"${env:ProgramFiles(x86)}\Microsoft Visual Studio\Installer\vswhere.exe" -latest -format value -property installationPath
+          &$vs\Common7\Tools\Launch-VsDevShell.ps1 -HostArch Amd64 -Arch x86
+          Enter-VsDevshell -VsInstallPath $vs -HostArch Amd64 -Arch x86 -DevCmdArguments "-winsdk=10.0.22621.0"
+          $new_env = ls env: | foreach { echo "$($_.key)=$($_.value)" }
+          $new_env >> $env:GITHUB_ENV
+          $env:PATH >> $env:GITHUB_PATH
+
       - name: disable git crlf conversion
         run: git config --global core.autocrlf false