break up Python CI steps so reading logs is easier

.github/scripts/python.sh

@@ -43,8 +43,10 @@ if [ -z ${PYTHON_VERSION+x} ]; then
     exit 127
 fi
 
-PYTHON="python${PYTHON_VERSION}"
+export PYTHON="python${PYTHON_VERSION}"
 
+function install_dependencies()
+{
   if [[ $(uname) == "Darwin" ]]; then
     brew install wget
   else
@@ -52,18 +54,20 @@ else
     sudo apt-get install -y wget libicu-dev python3-pip python3-setuptools
   fi
 
-PATH=$PATH:$($PYTHON -c "import site; print(site.USER_BASE)")/bin
+  export PATH=$PATH:$($PYTHON -c "import site; print(site.USER_BASE)")/bin
 
   [ "${GTSAM_WITH_TBB:-OFF}" = "ON" ] && install_tbb
 
+  $PYTHON -m pip install -r $GITHUB_WORKSPACE/python/requirements.txt
+}
 
-BUILD_PYBIND="ON"
+function build()
-
+{
-sudo $PYTHON -m pip install -r $GITHUB_WORKSPACE/python/requirements.txt
-
   mkdir $GITHUB_WORKSPACE/build
   cd $GITHUB_WORKSPACE/build
 
+  BUILD_PYBIND="ON"
+
   cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE} \
       -DGTSAM_BUILD_TESTS=OFF \
       -DGTSAM_BUILD_UNSTABLE=${GTSAM_BUILD_UNSTABLE:-ON} \
@@ -84,5 +88,22 @@ make -j2 install
 
   cd $GITHUB_WORKSPACE/build/python
   $PYTHON -m pip install --user .
+}
+
+function test()
+{
   cd $GITHUB_WORKSPACE/python/gtsam/tests
   $PYTHON -m unittest discover -v
+}
+
+# select between build or test
+case $1 in
+  -d)
+    install_dependencies
+  -b)
+    build
+    ;;
+  -t)
+    test
+    ;;
+esac

.github/workflows/build-python.yml

@@ -117,11 +117,12 @@ jobs:
         uses: pierotofy/set-swap-space@master
         with:
           swap-size-gb: 6
-      - name: Build (Linux)
+      - name: Install Dependencies
-        if: runner.os == 'Linux'
         run: |
-          bash .github/scripts/python.sh
+          bash .github/scripts/python.sh -d
-      - name: Build (macOS)
+      - name: Build
-        if: runner.os == 'macOS'
         run: |
-          bash .github/scripts/python.sh
+          bash .github/scripts/python.sh -b
+      - name: Test
+        run: |
+          bash .github/scripts/python.sh -t