How to deploy code that uses Dryscrape in Heroku? (No such file or directory: 'src/webkit_server')

Question

I’m not being able to push my app on Heroku. My application uses the library Dryscrape, and when I deploy to the Heroku app I get the following error:

sh: 1: qmake: not found

error: [Errno 2] No such file or directory: 'src/webkit_server'

Dryscrape requires some prerequisites to work: Qt, Qtwebkit, lxml, Pip, xvfb_ . I’ve already added them to Reset.txt, but I’m not successful. The Heroku deploy says you can’t find Qt.

I have also tried a solution proposed in another forum (link), but I get the same mistake.