How do I uninstall this buildpack in Heroku?

Question

I installed heroku-buildpack-php-tyler on my Heroku app a few days ago, and it all seemed to work fine. I installed it by running the following command:

heroku config:set BUILDPACK_URL=git://github.com/iphoting/heroku-buildpack-php-tyler.git

However I now want to remove it. I tried using the following command:

heroku config:unset BUILDPACK_URL=git://github.com/iphoting/heroku-buildpack-php-tyler.git

But it returns the following error message:

Unsetting BUILDPACK_URL=git://github.com/iphoting/heroku-buildpack-php-tyler.git and restarting hnf-heroku... failed

! Resource not found`

Because PHP isn't officially supported by Heroku, there's not much documentation about this. So how do I uninstall this buildpack?

Answer 1

Try:

heroku config:unset BUILDPACK_URL

Answer 2

In the current version of heroku (v3.1.0 as of this writing) you can use heroku buildpacks:remove [BUILDPACK_URL]

Typing heroku buildpacks help lists the available commands:

  buildpacks:add BUILDPACK_URL       #  add new app buildpack, inserting into list of buildpacks if neccessary
  buildpacks:clear                   #  clear all buildpacks set on the app
  buildpacks:remove [BUILDPACK_URL]  #  remove a buildpack set on the app
  buildpacks:set BUILDPACK_URL       #  set new app buildpack, overwriting into list of buildpacks if neccessary

Answer 3

Running heroku config:unset and heroku buildpacks:remove did not work for me. However, simply running heroku buildpacks:clear did restore everything to its default state. Then, on the next git push heroku, the appropriate buildpack is added on the fly.