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heroku-buildpack-python/bin/steps/cryptography
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2014-10-06 21:13:41 +02:00

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#!/usr/bin/env bash
# This script serves as the Pylibmc build step of the
# [**Python Buildpack**](https://github.com/heroku/heroku-buildpack-python)
# compiler.
#
# A [buildpack](http://devcenter.heroku.com/articles/buildpacks) is an
# adapter between a Python application and Heroku's runtime.
#
# This script is invoked by [`bin/compile`](/).
# The location of the pre-compiled cryptography binary.
VENDORED_LIBFFI="http://lang-python.s3.amazonaws.com/$STACK/libraries/vendor/libffi.tar.gz"
PKG_CONFIG_PATH="/app/.heroku/vendor/lib/pkgconfig:$PKG_CONFIG_PATH"
# Syntax sugar.
source $BIN_DIR/utils
bpwatch start libffi_install
# If pylibmc exists within requirements, use vendored cryptography.
if (pip-grep -s requirements.txt bcrypt cffi cryptography &> /dev/null) then
if [ -d ".heroku/vendor/lib/libffi-3.1.1" ]; then
export LIBFFI=$(pwd)/vendor
else
echo "-----> Noticed cffi. Bootstrapping libffi."
mkdir -p .heroku/vendor
# Download and extract cryptography into target vendor directory.
curl $VENDORED_LIBFFI -s | tar zxv -C .heroku/vendor &> /dev/null
export LIBFFI=$(pwd)/vendor
fi
fi
bpwatch stop libffi_install