Merge branch 'tk/macos-pip-install-conan' into tk/decomposition-refactor-forward-backward

Author: tkoskela

.github/workflows/cmake.yml

@@ -73,15 +73,28 @@ jobs:
       run: |
         sudo apt update
         sudo apt install libtiff5-dev openmpi-bin libopenmpi-dev libeigen3-dev libyaml-cpp-dev ccache
-        pip install conan
 
     - name: Install Dependencies on MacOS
       if: ${{ contains(matrix.os, 'macos') }}
       run: |
         brew update
-        brew install libtiff open-mpi libyaml ccache conan
+        brew install libtiff open-mpi libyaml ccache
         echo "CMAKE_PREFIX_PATH=/usr/local/opt/libomp" >> $GITHUB_ENV
 
+    - name: Select Python 3.10
+      # otherwise turtlebrowser/get-conan@v1.1 fails on macos-12
+      # ref: https://github.com/turtlebrowser/get-conan/issues/4
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.10'
+        
+    - name: Install Conan
+      id: conan
+      uses: turtlebrowser/get-conan@main
+
+    - name: Conan version
+      run: echo "${{ steps.conan.outputs.version }}"
+        
     - name: Prepare ccache timestamp
       id: ccache_cache_timestamp
       shell: cmake -P {0}