mirror of
https://github.com/not-kennethreitz/pipenv-buildpack.git
synced 2026-06-05 06:56:16 +00:00
128 lines
4.6 KiB
Bash
128 lines
4.6 KiB
Bash
#!/usr/bin/env bash
|
||
|
||
# Fail fast and fail hard.
|
||
set -eo pipefail
|
||
|
||
# Setup Path variables, for later use in the Buildpack.
|
||
BIN_DIR=$(cd "$(dirname "$0")"; pwd) # absolute path
|
||
ROOT_DIR=$(dirname "$BIN_DIR")
|
||
BUILD_DIR=$1
|
||
CACHE_DIR=$2
|
||
ENV_DIR=$3
|
||
|
||
|
||
# Set the Buildpack's internet target for downloading Python distributions.
|
||
# The user can provide BUILDPACK_VENDOR_URL to specify a custom target.
|
||
# Note: this is designed for non-Heroku use, as it does not use the user-provided
|
||
# environment variable mechanism (the ENV_DIR).
|
||
VENDOR_URL="https://lang-python.s3.amazonaws.com/$STACK"
|
||
if [[ -n ${BUILDPACK_VENDOR_URL:-} ]]; then
|
||
VENDOR_URL="$BUILDPACK_VENDOR_URL"
|
||
fi
|
||
export VENDOR_URL
|
||
|
||
# Which versions of Python are we using?
|
||
# These variables are used to specify which versions of Python to install by default,
|
||
# as well as prompt the user to upgrade if they are using an un–supported version.
|
||
# Note: When 3.7 lands, I recommend switching to LATEST_36 and LATEST_37.
|
||
DEFAULT_PYTHON_VERSION="python-3.7.2"
|
||
|
||
mkdir -p /app/.heroku
|
||
mkdir -p "$CACHE_DIR"
|
||
|
||
# Restore old artifacts from the cache.
|
||
mkdir -p .heroku
|
||
|
||
# The Python installation.
|
||
cp -R "$CACHE_DIR/.heroku/python" .heroku/ &> /dev/null || true
|
||
|
||
# The location of the pre-compiled python binary.
|
||
VENDORED_PYTHON="${VENDOR_URL}/runtimes/$PYTHON_VERSION.tar.gz"
|
||
|
||
puts-step "Installing $PYTHON_VERSION"
|
||
|
||
set +e
|
||
# Prepare destination directory.
|
||
mkdir -p .heroku/python
|
||
if ! curl "${VENDORED_PYTHON}" -s | tar zxv -C .heroku/python &> /dev/null; then
|
||
puts-warn "Requested runtime ($PYTHON_VERSION) is not available for this stack ($STACK)."
|
||
puts-warn "Aborting. More info: https://devcenter.heroku.com/articles/python-support"
|
||
exit 1
|
||
fi
|
||
|
||
hash -r
|
||
set -e
|
||
|
||
if [[ -f Pipfile.lock ]]; then
|
||
if [[ -f .heroku/python/Pipfile.lock.sha256 ]]; then
|
||
if [[ $(openssl dgst -sha256 Pipfile.lock) == $(cat .heroku/python/Pipfile.lock.sha256) ]]; then
|
||
|
||
if ! grep -q 'git' Pipfile.lock; then
|
||
echo "Skipping installation, as Pipfile.lock hasn't changed since last deploy." | indent
|
||
|
||
export SKIP_PIPENV_INSTALL=1
|
||
fi
|
||
fi
|
||
fi
|
||
fi
|
||
|
||
|
||
|
||
if [ ! "$SKIP_PIPENV_INSTALL" ]; then
|
||
# Pipenv support (Generate requriements.txt with pipenv).
|
||
if [[ -f Pipfile ]]; then
|
||
# Measure that we're using Pipenv.
|
||
mcount "tool.pipenv"
|
||
|
||
# Skip pip install, later.
|
||
export SKIP_PIP_INSTALL=1
|
||
|
||
# Set Pip env vars
|
||
# This reads certain environment variables set on the Heroku app config
|
||
# and makes them accessible to the pip install process.
|
||
#
|
||
# PIP_EXTRA_INDEX_URL allows for an alternate pypi URL to be used.
|
||
if [[ -r "$ENV_DIR/PIP_EXTRA_INDEX_URL" ]]; then
|
||
PIP_EXTRA_INDEX_URL="$(cat "$ENV_DIR/PIP_EXTRA_INDEX_URL")"
|
||
export PIP_EXTRA_INDEX_URL
|
||
mcount "buildvar.PIP_EXTRA_INDEX_URL"
|
||
fi
|
||
|
||
# Set SLUGIFY_USES_TEXT_UNIDECODE, required for Airflow versions >=1.10
|
||
if [[ -r "$ENV_DIR/SLUGIFY_USES_TEXT_UNIDECODE" ]]; then
|
||
SLUGIFY_USES_TEXT_UNIDECODE="$(cat "$ENV_DIR/SLUGIFY_USES_TEXT_UNIDECODE")"
|
||
export SLUGIFY_USES_TEXT_UNIDECODE
|
||
mcount "buildvar.SLUGIFY_USES_TEXT_UNIDECODE"
|
||
fi
|
||
|
||
export PIPENV_VERSION="2018.5.18"
|
||
|
||
# Install pipenv.
|
||
# Due to weird old pip behavior and pipenv behavior, pipenv upgrades pip
|
||
# to latest if only --upgrade is specified. Specify upgrade strategy to
|
||
# avoid this eager behavior.
|
||
/app/.heroku/python/bin/pip install pipenv==$PIPENV_VERSION --upgrade --upgrade-strategy only-if-needed &> /dev/null
|
||
|
||
# Install the dependencies.
|
||
if [[ ! -f Pipfile.lock ]]; then
|
||
puts-step "Installing dependencies with Pipenv $PIPENV_VERSION…"
|
||
/app/.heroku/python/bin/pipenv install --system --skip-lock 2>&1 | indent
|
||
else
|
||
"$BIN_DIR/steps/pip-uninstall"
|
||
cp requirements.txt .heroku/python/requirements-declared.txt
|
||
openssl dgst -sha256 Pipfile.lock > .heroku/python/Pipfile.lock.sha256
|
||
|
||
puts-step "Installing dependencies with Pipenv $PIPENV_VERSION…"
|
||
/app/.heroku/python/bin/pipenv install --system --deploy 2>&1 | indent
|
||
fi
|
||
|
||
# Install the test dependencies, for CI.
|
||
if [ "$INSTALL_TEST" ]; then
|
||
puts-step "Installing test dependencies…"
|
||
/app/.heroku/python/bin/pipenv install --dev --system --deploy 2>&1 | cleanup | indent
|
||
fi
|
||
fi
|
||
else
|
||
export SKIP_PIP_INSTALL=1
|
||
fi
|