This buildpack is no longer maintained.
Please use Heroku maintained buildpack instead and follow their instructions.
If installed, this buildpack will only test existing Inscape installation, therefore it should run at the end of the buildpacks list.
$ heroku buildpacks:add https://github.com/MiroHibler/heroku-buildpack-inkscape.git [--index X] [--app APP_NAME]Don't forget to add inkscape to your Aptfile.