diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 445c0d5cd..cb447708f 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -8,6 +8,7 @@ on:
 
 jobs:
   build:
+    if: false
     runs-on: ubuntu-latest
 
     # Define the strategy for the build job. We generally want to cover each
@@ -339,6 +340,7 @@ jobs:
 
   # Generic runtime tests, which only need to run once (on the host)
   test-runtime-format:
+    if: false
     runs-on: ubuntu-latest
     steps:
     # We don't need submodules here since Keystone is a monorepo!
@@ -355,6 +357,7 @@ jobs:
         [ "$FORMAT_RESULT" = "no modified files to format" ] || [ "$FORMAT_RESULT" = "clang-format did not modify any files" ]
 
   test-runtime-functionality:
+    if: false
     runs-on: ubuntu-latest
     steps:
     - name: Checkout Keystone
@@ -374,10 +377,11 @@ jobs:
 
   # Build tests, which are run for each supported platform
   test-runtime-build:
+    if: false
     needs: build
     uses: ./.github/workflows/build-runtime.yml
 
   # System tests, which are run for simulatable and self-hostable platforms
   test-system-functionality:
-    needs: build
+#    needs: build
     uses: ./.github/workflows/test-system.yml
diff --git a/.github/workflows/test-system.yml b/.github/workflows/test-system.yml
index 41185922d..160fe77c3 100644
--- a/.github/workflows/test-system.yml
+++ b/.github/workflows/test-system.yml
@@ -8,12 +8,15 @@ jobs:
     environment: ${{ matrix.platform != 'generic' && 'track' || null }}
     strategy:
       matrix:
-        platform: [generic, mpfs] #cva6]
+        platform: [cva6]
         bits: [32, 64]
         exclude:
           # mpfs is not 32 bit
           - platform: mpfs
             bits: 32
+          # ignore 32-bit cva6 for now
+          - platform: cva6
+            bits: 32
 
     steps:
     - name: Checkout Keystone
@@ -25,11 +28,16 @@ jobs:
           scripts/
           mkutils/
 
-    - name: Restore build directory
-      uses: actions/download-artifact@v4
-      with:
-        name: keystone-${{ matrix.platform }}${{ matrix.bits }}-builddir
-        path: .
+#    - name: Restore build directory
+#      uses: actions/download-artifact@v4
+#      with:
+#        name: keystone-${{ matrix.platform }}${{ matrix.bits }}-builddir
+#        path: .
+
+    - name: Copy build directory
+      run: |
+        cp ~/keystone-${{ matrix.platform }}${{ matrix.bits }}-builddir.zip .
+        unzip keystone-${{ matrix.platform }}${{ matrix.bits }}-builddir.zip
 
     - name: Decompress build directory
       run: cat build.tar.xz | xz -d -T0 | tar -xf -