diff --git a/.github/workflows/main-stock-ubuntu.yml b/.github/workflows/main-stock-ubuntu.yml
index af12f19b..e9e6b263 100644
--- a/.github/workflows/main-stock-ubuntu.yml
+++ b/.github/workflows/main-stock-ubuntu.yml
@@ -32,6 +32,12 @@ jobs:
           sudo apt install -y pybind11-dev
           echo "::group::llvm18 install"
           sudo apt install -y llvm-18-dev
+          #echo "::group::clang18 install"
+          #sudo apt install -y clang-18
+          #echo "::group::lldb18 install"
+          #sudo apt install -y lldb-18
+          #echo "::group::lld18 install"
+          #sudo apt install -y lld-18
 
       - name: build+install catch2
         run: |
@@ -65,65 +71,9 @@ jobs:
           echo "::group::xo configure"
           cmake -B .build -S . -DCMAKE_INSTALL_PREFIX=${PREFIX} -DCMAKE_PREFIX_PATH=/usr/local # -DCMAKE_FIND_DEBUG_MODE=ON
 
-          echo "::group::xo-indentlog build"
-          cmake --build .build -- xo-indentlog
+          # note: xo-foo targets exist, but don't build anything
 
-          echo "::group::xo-refcnt build"
-          cmake --build .build -- refcnt
-
-          echo "::group::xo-subsys build"
-          cmake --build .build -- xo-subsys
-
-          echo "::group::xo-randomgen build"
-          cmake --build .build -- xo-randomgen
-
-          echo "::group::xo-ordinaltree build"
-          cmake --build .build -- xo-ordinaltree
-
-          echo "::group::xo-flatstring build"
-          cmake --build .build -- xo-flatstring
-
-          echo "::group::xo-pyutil build"
-          cmake --build .build -- xo-pyutil
-
-          echo "::group::xo-reflectutil build"
-          cmake --build .build -- xo-reflectutil
-
-          echo "::group::xo-reflect build"
-          cmake --build .build -- xo-reflect
-
-          echo "::group::xo-pyreflect build"
-          cmake --build .build -- xo-pyreflect
-
-          echo "::group::xo-ratio build"
-          cmake --build .build -- xo-ratio
-
-          echo "::group::xo-unit build"
-          cmake --build .build -- xo-unit
-
-          echo "::group::xo-pyunit build"
-          cmake --build .build -- xo-pyunit
-
-          ##############
-
-          echo "::group::xo-expression build"
-          cmake --build .build -- xo-expression
-
-          echo "::group::xo-pyexpression build"
-          cmake --build .build -- xo-pyexpression
-
-          echo "::group::xo-tokenizer build"
-          cmake --build .build -- xo-tokenizer
-
-          echo "::group::xo-reader build"
-          cmake --build .build -- xo-reader
-
-          echo "::group::xo-jit build"
-          cmake --build .build -- xo-jit
-
-          ##############
-
-          echo "::group::xo build (catch all)"
+          echo "::group::xo build"
           cmake --build .build #--verbose
 
           echo "::group::xo install"