Using MSVC compiler with msys

I’ve been having trouble configuring my windows build to use the Visual Studio compiler (cl) in an msys shell. I’ve tried a variety of configurations and PATH manipulations, but nothing seems to work. Example workflow:

- name: Run batch file and set path
  run: | 
    C:\"Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
    echo "/c/Program Files (x86)/Microsoft Visual Studio/2019/Enterprise/VC/Tools/MSVC/14.28.29910/bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
    which cl # returns the correct path
- uses: msys2/setup-msys2@v2
  with:
    update: true
    install: >-
      base-devel
      git
    path-type: inherit
- name: Build project
  run: |
    ./coinbrew/coinbrew build my-repo
  shell: msys2 {0}

Running this workflow errors because it can’t find the compiler:

checking for icl... no
checking for cl... no
configure: error: Neither MS nor Intel C compiler found in PATH and CC is unset.
Error: Process completed with exit code 1.

I’ve confirmed that the PATH is being preserved with the inherit parameter, but for some reason my program can’t seem to find the compiler. This configuration work fine on AppVeyor.

[xmunoz]

For posterity, here is what my final config looked like:

...
      - name: Set up msvc
        uses: ilammy/msvc-dev-cmd@v1
      - name: Set up msys
        uses: msys2/setup-msys2@v2
        with:
          update: true
          install: >-
            base-devel
            git
          path-type: inherit
      - name: Build project
        run: |
          # all my build commands
        shell: msys2 {0}
...

[Biswa96]

Why do you want to use MSVC in msys2?