feat(diffusers): add MPS version (#6121)

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

.github/workflows/backend_build_darwin.yml

@@ -12,6 +12,10 @@ on:
         description: 'Build type (e.g., mps)'
         default: ''
         type: string
+      use-pip:
+        description: 'Use pip to install dependencies'
+        default: false
+        type: boolean
       go-version:
         description: 'Go version to use'
         default: '1.24.x'
@@ -63,7 +67,7 @@ jobs:
       - name: Build ${{ inputs.backend }}-darwin
         run: |
           make protogen-go
-          BACKEND=${{ inputs.backend }} BUILD_TYPE=${{ inputs.build-type }} make build-darwin-python-backend
+          BACKEND=${{ inputs.backend }} BUILD_TYPE=${{ inputs.build-type }} USE_PIP=${{ inputs.use-pip }} make build-darwin-python-backend
           
       - name: Upload ${{ inputs.backend }}.tar
         uses: actions/upload-artifact@v4