-pip install --user --quiet --upgrade pip==18.0 setuptools==40.0.0
-pip install --user --quiet --upgrade -r "$REQUIREMENTS_FILE"
-pip freeze
+ #Python 3.5 in Ubuntu 16.04 workaround
+ if [[ -f /etc/lsb-release ]]; then
+ # shellcheck disable=SC1091
+ source /etc/lsb-release
+ if [[ $DISTRIB_RELEASE == "16.04" && $DISTRIB_ID == "Ubuntu" ]]; then
+ echo "WARNING: Python projects should move to Ubuntu 18.04 to continue receiving support"
+ echo "zipp==1.1.0" >> "$requirements_file"
+ fi
+ fi
+
+ python3 -m pip install --user --quiet --upgrade pip
+ python3 -m pip install --user --quiet --no-warn-script-location --upgrade setuptools
+ python3 -m pip install --user --quiet --no-warn-script-location --upgrade lftools[openstack]
+ python3 -m pip install --user --quiet --no-warn-script-location --upgrade \
+ --upgrade-strategy eager -r "$requirements_file"
+ # installs are silent, show version details in log
+ python3 --version
+ python3 -m pip --version
+ python3 -m pip freeze
+
+ rm -rf "$requirements_file"
+ touch /tmp/pre-build-complete
+fi