[Python] Try to install sdist with pip during packaging, fall back to…

… setup.py

packaging/wheel/install.sh

@@ -38,8 +38,19 @@ if [ "$res" -ne "0" ]; then
 fi
 
 cd ../bindings/python
-$6 setup.py install $3 # $6 holds the python sys.executable
-res=$?
+
+# Determine if shutil.which is available for a modern Python package install
+${6} -c 'import shutil.which' &> /dev/null  # $6 holds the python sys.executable
+shutil_which_available=$?
+if [ "${shutil_which_available}" -ne "0" ]; then
+    ${6} setup.py install ${3}
+    res=$?
+else
+    ${6} -m pip install ${3} .
+    res=$?
+fi
+unset shutil_which_available
+
 if [ "$res" -ne "0" ]; then
     exit 1
 fi