+#!/bin/sh -exu
+#
+# Copyright (C) 2015 Michael Jeanson <mjeanson@efficios.com>
+# Copyright (C) 2019 Francis Deslauriers <francis.deslauriers@efficios.com>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+PYTHON3=python3
+
+PYENV_HOME="$WORKSPACE/.pyenv/"
+
+# Delete previously built virtualenv
+if [ -d "$PYENV_HOME" ]; then
+ rm -rf "$PYENV_HOME"
+fi
+
+# Create virtualenv and install necessary packages
+virtualenv --system-site-packages -p ${PYTHON3} "$PYENV_HOME"
+
+set +u
+. "$PYENV_HOME/bin/activate"
+set -u
+
+pip install --quiet black
+
+black --diff --check src/babeltrace