Try using cmd

Author: mdboom

bench_runner/templates/_benchmark.src.yml

@@ -108,9 +108,14 @@ jobs:
           ref: ${{ env.PYPERFORMANCE_HASH }}
       - name: Build Python
         if: ${{ steps.should_run.outputs.should_run != 'false' }}
+        # The build.bat script is much easier to use from cmd
+        shell: cmd
         run: |
           cd cpython
-          PCbuild\build.bat ($env:BUILD_FLAGS -split ' ') ${{ inputs.pgo == true && '--pgo' || '' }} ${{ inputs.jit == true && '--experimental-jit' || '' }} ${{ inputs.tier2 == true && '--experimental-jit-interpreter' || '' }} ${{ inputs.nogil == true && '--disable-gil' || '' }} -c Release ${{ inputs.clang == true && '\"/p:PlatformToolset=clangcl\"' }} ${{ inputs.clang == true && '\"/p:LLVMInstallDir=C:\Program Files\LLVM\"' }} ${{ inputs.clang == true && '\"/p:LLVMToolsVersion=19.1.6\"' }}
+          PCbuild\build.bat %BUILD_FLAGS% ${{ inputs.pgo == true && '--pgo' || '' }} ${{ inputs.jit == true && '--experimental-jit' || '' }} ${{ inputs.tier2 == true && '--experimental-jit-interpreter' || '' }} ${{ inputs.nogil == true && '--disable-gil' || '' }} -c Release ${{ inputs.clang == true && '"/p:PlatformToolset=clangcl"' }} ${{ inputs.clang == true && '"/p:LLVMInstallDir=C:\Program Files\LLVM"' }} ${{ inputs.clang == true && '"/p:LLVMToolsVersion=19.1.6"' }}
+      - name: Copy Python to different location
+        if: ${{ steps.should_run.outputs.should_run != 'false' }}
+        run: |
           # Copy the build products to a place that libraries can find them.
           Copy-Item -Path $env:BUILD_DEST -Destination "libs" -Recurse
       - name: Install pyperformance