[Build|GH] Add quick-fix to avoid need for EF-infrastrucutre

Author: HannesWell

.github/workflows/mavenBuild.yml

@@ -15,11 +15,16 @@ on:
         type: string
         required: false
         default: 'false'
-      mavenVersion: 
+      mavenVersion:
         description: 'The version of Maven set up'
         type: string
         required: false
         default: '3.9.9'
+      without-EF-infra:
+        description: 'Weather to run this build without the need for EF-infrastructure (which is currently unavailable).'
+        type: boolean
+        required: false
+        default: false
 
 permissions: {}
 
@@ -64,6 +69,29 @@ jobs:
           JavaSE-21
         distribution: 'temurin'
         cache: maven
+
+    - name: Checkout eclipse.platform.releng.aggregator
+      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      if : inputs.without-EF-infra
+      with:
+        repository: eclipse-platform/eclipse.platform.releng.aggregator
+        path: eclipse.platform.releng.aggregator
+        sparse-checkout: |
+          eclipse-platform-parent
+          eclipse.platform.releng.prereqs.sdk
+    - name: Install eclipse-parent poms
+      if : inputs.without-EF-infra
+      working-directory: eclipse.platform.releng.aggregator
+      run: |
+        cd eclipse-platform-parent
+        mvn clean install -B -ntp '-Dtycho.version=4.0.12'
+        cd ..
+        cd eclipse.platform.releng.prereqs.sdk
+        mvn clean install -B -ntp '-Dtycho.version=4.0.12'
+    - name: Remove eclipse.platform.releng.aggregator
+      if : inputs.without-EF-infra
+      run: ${{ matrix.config.name == 'Windows' && 'rmdir -r -Force' || 'rm -rf' }} eclipse.platform.releng.aggregator
+
     - name: Set up Maven
       uses: stCarolas/setup-maven@d6af6abeda15e98926a57b5aa970a96bb37f97d1 # v5
       with:
@@ -80,6 +108,7 @@ jobs:
       with:
        run: >- 
         mvn --batch-mode -V -U -e
+        ${{ inputs.without-EF-infra && '-Dtycho.version=4.0.12' || '' }}
         -ntp
         -Dcompare-version-with-baselines.skip=false
         -Pbree-libs