"Push rejected, failed to compile Multipack app" when deploying heroku-buildpack-nodejs and heroku-buildpack-ruby-minimal

Question

I'm using heroku-buildpack-multi: ``` BUILDPACK_URL=https://github.com/ddollar/heroku-buildpack-multi.git ``` I'm trying to deploy with two buildpacks and am getting the following error: ``` Fetching repository, done. Counting objects: 6, done. Delta compression using up to 4 threads. Compressing objects: 100% (3/3), done. Writing objects: 100% (3/3), 325 bytes | 0 bytes/s, done. Total 3 (delta 2), reused 0 (delta 0) -----> Fetching custom git buildpack... done -----> Multipack app detected =====> Downloading Buildpack: https://github.com/heroku/heroku-buildpack-nodejs.git ! Push rejected, failed to compile Multipack app ``` Here are the contents of my .buildpack ``` https://github.com/heroku/heroku-buildpack-nodejs.git https://github.com/dpiddy/heroku-buildpack-ruby-minimal.git ``` It used to be intermittent but it's now happening every time I try to deploy. Strangely enough, the official heroku ruby project seems to have gone missing... https://github.com/heroku/heroku-buildpack-rub…

Accepted Answer

You need a package.json for the node buildpack. So, something like:

```
{
  "private": true,
  "name": "my-rad-proj",
  "version": "0.1.0",
  "engines": {
    "node": "~0.10.21"
  }
}
```

As well as the Gemfile for ruby.

"Push rejected, failed to compile Multipack app" when deploying heroku-buildpack-nodejs and heroku-buildpack-ruby-minimal

Solution

Problem