Installing libgraphqlparser on Heroku

This buildpack will install libgraphqlparser on Heroku.

Usage

Getting libgraphqlparser working on Heroku is a pretty big pain. But these steps will hopefully help.

Configure buildpacks

Set your app to use heroku-buildpack-multi.

Then create a file in your repo root called .buildpacks. You need to add this to the beginning:

https://github.com/ddollar/heroku-buildpack-apt
https://github.com/goco-inc/heroku-buildpack-libgraphqlparser.git

Next, create a file in your repo root called Aptfile, and put this in it:

cmake
flex

Using the graphql-libgraphqlparser gem

I created this buildpack so that I could use the graphql-libgraphqlparser gem at GoCo. To get that gem to work, you need a few more things:

Heroku Bundle Config

You need to add the heroku-bundle-config buildpack to your app. Here's a complete .buildpacks file example:

https://github.com/ddollar/heroku-buildpack-apt
https://github.com/goco-inc/heroku-buildpack-libgraphqlparser.git
https://github.com/timolehto/heroku-bundle-config.git
https://github.com/heroku/heroku-buildpack-ruby

Then create a file in your repo root called .heroku-bundle/config, and put this in it:

---
BUNDLE_BUILD__GRAPHQL-LIBGRAPHQLPARSER: "--with-graphql-include=/app/libgraphqlparser/include/graphqlparser
  --with-graphql-lib=/app/libgraphqlparser/lib"

Finally, at runtime, Ruby needs to know to look for the binaries in a non-standard location. To do that, set the LD_LIBRARY_PATH environment variable to something like this:

/app/.heroku/vendor/lib:/app/libgraphqlparser/lib

That should be all you need!