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heroku-buildpack-python/bin/steps/pip-install
T

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# Install dependencies with Pip.
puts-step "Installing dependencies with pip"
[ ! "$FRESH_PYTHON" ] && bpwatch start pip_install
[ "$FRESH_PYTHON" ] && bpwatch start pip_install_first
set +e
/app/.heroku/python/bin/pip install -r requirements.txt --exists-action=w --src=./.heroku/src --disable-pip-version-check --no-cache-dir | cleanup | log-output | indent
PIP_STATUS="${PIPESTATUS[0]}"
set -e
if [[ ! $PIP_STATUS -eq 0 ]]; then
echo
show-warnings
exit 1
fi
# Smart Requirements handling
cp requirements.txt .heroku/python/requirements-declared.txt
/app/.heroku/python/bin/pip freeze > .heroku/python/requirements-installed.txt
[ ! "$FRESH_PYTHON" ] && bpwatch stop pip_install
[ "$FRESH_PYTHON" ] && bpwatch stop pip_install_first
echo