I'm trying to get the PHP Tidy extension to run on my Heroku instance that I've set up. I've added ext-tidy to my composer.json file and run composer update to update the composer.lock file.
However when I push the changes to Heroku, the build fails as the Heroku buildpack doesn't include the Tidy extension.
Is there a way to get Composer to bundle the Tidy extension so that it gets pushed to Heroku (I'm using a Windows machine so I don't know if this will complicate matters if it is possible)? Or do I need to create a new buildpack with Tidy integrated? If so, I'd appreciate it if someone could point me in the right direction to be able to do this.
Thanks.