xdebug/blog/vendor/psy/psysh/bin/build-vendor-compat

#!/usr/bin/env bash

set -e

cd "${BASH_SOURCE%/*}/.."

rm -rf build-vendor
rm composer*.lock

cp composer.json composer-compat.json

if [[ $(php --version) = PHP\ 5.3* ]]; then
  HOA_VERSION=^1.14
fi

COMPOSER=composer-compat.json COMPOSER_VENDOR_DIR=build-vendor \
  composer require symfony/intl hoa/console $HOA_VERSION --no-progress --no-update --no-interaction --verbose

COMPOSER=composer-compat.json COMPOSER_VENDOR_DIR=build-vendor \
  composer update --prefer-stable --no-dev --no-progress --classmap-authoritative --no-interaction --verbose