pants

#!/usr/bin/env bash
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Wrapper script for self-bootstrapping pants.
set -e

HERE=$(cd `dirname "${BASH_SOURCE[0]}"` && pwd)
PANTS_VERSION=$(cat $HERE/.pantsversion)
# Pinned pants requirements - to upgrade pants change this file.
PANTS_REQUIREMENTS="$HERE/build-support/pants_requirements.txt"
if ! [ -f "$HERE/build-support/pants.venv/BOOTSTRAPPED" ] || \
    [[ $(< "$HERE/build-support/pants.venv/BOOTSTRAPPED") != $PANTS_VERSION ]]; then

  echo Bootstrapping pants @ $PANTS_VERSION
  rm -fr "$HERE/build-support/pants.venv"
  "$HERE/build-support/virtualenv" "$HERE/build-support/pants.venv"
  # TODO(ksweeney): remove this hack when https://github.com/pantsbuild/pex/issues/21 is fixed.
  rm -fr "$HERE/build-support/pants.venv/local"
  source "$HERE/build-support/pants.venv/bin/activate"
  pip install -r "$PANTS_REQUIREMENTS"
  echo $PANTS_VERSION > "$HERE/build-support/pants.venv/BOOTSTRAPPED"
fi
source "$HERE/build-support/pants.venv/bin/activate"
exec pants "$@"