heroku-buildpack-python/bin/steps/pipenv

#!/usr/bin/env bash

# export CLINT_FORCE_COLOR=1
# export PIPENV_FORCE_COLOR=1
# shellcheck source=bin/utils
source $BIN_DIR/utils
set -e

if [[ -f Pipfile.lock ]]; then
    if [[ -f .heroku/python/Pipfile.lock.sha256 ]]; then
        if [[ $(openssl dgst -sha256 Pipfile.lock) == $(cat .heroku/python/Pipfile.lock.sha256) ]]; then
            if [[ ! "$PIPENV_ALWAYS_INSTALL" ]]; then
                echo "Skipping installation, as Pipfile.lock hasn't changed since last deploy." | indent
                echo "To disable this functionality, run the following command:"
                echo ""
                echo "    $ heroku config:set PIPENV_ALWAYS_INSTALL=1" | 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_EXTRA_INDEX_URL
        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
        fi

        # Install pipenv.
        /app/.heroku/python/bin/pip install pipenv --upgrade &> /dev/null

        # Install the dependencies.
        if [[ ! -f Pipfile.lock ]]; then
            puts-step "Installing dependencies with latest Pipenv…"
            /app/.heroku/python/bin/pipenv install --system --skip-lock 2>&1 | indent
        else
            pipenv-to-pip Pipfile.lock > requirements.txt
            "$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 latest Pipenv…"
            /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
    pipenv-to-pip Pipfile.lock > requirements.txt
    export SKIP_PIP_INSTALL=1
fi