heroku-buildpack-wkhtmltopdf

Fork of https://github.com/kwrdie/heroku-22-buildpack-wkhtmltopdf. Largely rewritten.

Problem

Heroku's own heroku-community/apt buildpack allows successful installation of wkhtmltopdf through an Aptfile. However, it copies those files to /.apt/usr/local/bin, and does NOT link that directory to PATH, making it less than ideal for portable web apps.

Solution

This is a somewhat unnecessary workaround to download wkhtmltopdf to /app/bin/ (this is what Heroku's build directory ultimately links to, in case you're confused by the source code), and subsequently adds /app/bin/ to PATH the way the gods intended.

This means, running heroku run bash and then wkhtmltopdf will work. Huzzah!

Usage

heroku buildpacks:add diglactic/heroku-buildpack-wkhtmltopdf

You can override the binary URL via an environment variable:

WKHTMLTOPDF_BINARY_URL=https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6.1-2/wkhtmltox_0.12.6.1-2.jammy_amd64.deb

When changing this variable, you will need to clear the Heroku build cache by running this command locally:

heroku plugins:install heroku-builds
heroku builds:cache:purge

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