Magento 2 module with development hacks, that came in handy for myself.
Use the following commands to install:
composer require yireo/magento2-devhacks:@dev --dev
Enable this module:
./bin/magento module:enable Yireo_DevHacks
./bin/magento setup:upgrade
The core checks whether PHTML templates are in the path of the Magento core. When using the composer feature path to symlink a local repository to Magento, while the path is outside of Magento, this throws an exception. This module simply skips the entire logic. No configuration needed. Bam.
Moved to separate Yireo_IntegrationTestHelper module instead.