github actions, take 3

.github/workflows/cmake-single-platform.yml

@@ -26,6 +26,10 @@ jobs:
       # install catch2.  see [[https://stackoverflow.com/questions/57982945/how-to-apt-get-install-in-a-github-actions-workflow]]
       run: sudo apt-get install -y catch2
 
+    - name: Fetch indentlog
+      # fetch source tree for indentlog dependency
+      run: git clone git@github.com:rconybea/indentlog.git
+
 #    - name: Configure CMake
 #      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
 #      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type