[SOLVED] Failing to deploy Elixir application on Heroku because of dependency on a private repo

Failing to deploy Elixir application on Heroku because of dependency on a private repo

I'm using heroku's buildpack for Elixir and one of the dependencies is failing with mix deps.get because it's from a private Github repository.

When I tried deploying I got this error:

remote: * Getting my_library (https://github.com/my_organization/my_library.git)
remote: fatal: could not read Username for 'https://github.com': No such device or address
remote: ** (Mix) Command "git --git-dir=.git fetch --force --quiet --progress" failed
remote:  !     Push rejected, failed to compile Elixir app.
remote: 
remote:  !     Push failed
remote: Verifying deploy...

I tried adding GITHUB_API_TOKEN in Heroku's config vars but I am still getting the same error.

Solution

The Elixir webpack does not include the steps for handling private GitHub dependencies. You can include this buildpack though to setup GitHub accordingly: https://github.com/timshadel/heroku-buildpack-github-netrc