Merge pull request #6 from ryanbrainard/support-env-dir

Remove user-env-compile dependency

Author: timshadel

README.md

@@ -18,13 +18,7 @@ and instead only set it on the app where you push your code & which runs the bui
 Requirements
 ------------
 
-The app must have `user-env-compile` enabled for the buildpack to have access to config vars when building.
-
-    heroku labs:enable user-env-compile -a myapp
-
-[Read more aobut user-env-compile.](https://devcenter.heroku.com/articles/labs-user-env-compile)
-
-You'll also need to make a Github authorization token. Here's the `curl` command you can use.
+You'll need to make a Github authorization token. Here's the `curl` command you can use.
 
 ```console
 $ curl -u 'my-read-only-user' -d '{"scopes":["repo"],"note":"GITHUB_AUTH_TOKEN for Heroku deplyoments","note_url":"https://github.com/timshadel/heroku-buildpack-github-netrc"}' https://api.github.com/authorizations  # Github API call
@@ -60,11 +54,10 @@ Usage
 
 Example usage:
 
-    $ heroku create --stack cedar --buildpack http://github.com/fs-webdev/heroku-buildpack-netrc.git
+    $ heroku create --buildpack https://github.com/fs-webdev/heroku-buildpack-netrc.git
 
-Enable config vars to be visible during buildpack execution, and set the token.
+Set the token.
 
-    $ heroku labs:enable user-env-compile
     $ heroku config:set GITHUB_AUTH_TOKEN=<my-read-only-token>
 
 Deploy your app.
@@ -82,4 +75,4 @@ $ git push heroku master  # push your changes to Heroku
        Github User:   my-read-only-user
        Authorization: GITHUB_AUTH_TOKEN for Heroku deplyoments (private repo access)
        Organizations: my-org, another-org
-```
+```

bin/compile

@@ -6,7 +6,16 @@ require "#{File.join(File.dirname(__FILE__), '..', 'lib', 'github')}"
 
 build_dir    = ARGV[0]
 cache_dir    = ARGV[1]
-github_token = ENV['GITHUB_AUTH_TOKEN']
+env_dir      = ARGV[2]
+
+github_token = if env_dir
+                 token_file = File.join(env_dir, 'GITHUB_AUTH_TOKEN')
+                 File.open(token_file, &:read) if File.exist? token_file
+               else
+                 # Legacy user-env-compile support
+                 # TODO: Remove once deprecation is complete
+                 ENV['GITHUB_AUTH_TOKEN']
+               end
 
 if github_token.nil?
   puts "       !!!! GITHUB_AUTH_TOKEN not set"
@@ -44,6 +53,6 @@ if valid_login? github_token
   # Print out user information
   puts user_block(github_token)
 else
-  puts "       !!!! No valid Github user found with GITHUB_AUTH_TOKEN: '#{ENV['GITHUB_AUTH_TOKEN']}'"
+  puts "       !!!! No valid Github user found with GITHUB_AUTH_TOKEN: '#{github_token}'"
   exit 1
 end