diff --git a/.github/workflows/main-stock-ubuntu.yml b/.github/workflows/main-stock-ubuntu.yml
index a3a54bce..07ef8245 100644
--- a/.github/workflows/main-stock-ubuntu.yml
+++ b/.github/workflows/main-stock-ubuntu.yml
@@ -49,6 +49,34 @@ jobs:
           sudo apt install -y llvm-18-dev
           echo "::endgroup"
 
+          echo "::group::doxygen install"
+          sudo apt install -y doxygen
+          echo "::endgroup"
+
+          echo "::group::sphinx install"
+          sudo apt install -y sphinx
+          echo "::endgroup"
+
+          echo "::group::libvulkan-dev install"
+          sudo apt install -y libvulkan-dev
+          echo "::endgroup"
+
+          echo "::group::vulkan-tools install"
+          sudo apt install -y vulkan-tools
+          echo "::endgroup"
+
+          echo "::group::vulkan-utility-libraries-dev install"
+          sudo apt install -y vulkan-utility-libraries-dev
+          echo "::endgroup"
+
+          echo "::group::libsdl2-dev"
+          sudo apt install -y libsdl2-dev
+          echo "::endgroup"
+
+          echo "::group::libbsd-dev"
+          sudo apt install -y libbsd-dev
+          echo "::endgroup"
+
           #echo "::group::clang18 install"
           #sudo apt install -y clang-18
           #echo "::group::lldb18 install"
@@ -72,6 +100,13 @@ jobs:
 
           # this should be sufficient for find_package(Catch2) to work
 
+      - name: clone imgui
+        run: |
+
+          echo "::group::clone imgui"
+          git clone https://github.com/ocornut/imgui.git
+          echo "::endgroup"
+
       - name: list /usr/lib
         run: |
           ls /usr/lib
diff --git a/xo-imgui/src/imgui/CMakeLists.txt b/xo-imgui/src/imgui/CMakeLists.txt
index 36663057..414d1a6d 100644
--- a/xo-imgui/src/imgui/CMakeLists.txt
+++ b/xo-imgui/src/imgui/CMakeLists.txt
@@ -2,9 +2,10 @@
 
 find_path(IMGUI_INCLUDE_DIR
     NAMES imgui/imgui.h
-    DOC "path to imgui header"
-    HINTS ${PROJECT_SOURCE_DIR}/include
-)
+#    HINTS ${PROJECT_SOURCE_DIR}/include   # merge loser
+    HINTS ${XO_UMBRELLA_SOURCE_DIR}
+    DOC "path to imgui header")
+
 if (IMGUI_INCLUDE_DIR)
     message(STATUS
         "found imgui/imgui.h in IMGUI_INCLUDE_DIR=[${IMGUI_INCLUDE_DIR}]")