[Question] How to tell Heroku to build my project with a tag?

<p>I have two implementations of a interface on the same project. One is write to work on Heroku, the other for working on anything else, including testing automation.</p> <p>I&#39;m puzzled on how to tell Heroku to build my project with the -tags option, I appreciate if anyone can help me with this.</p> <hr/>**评论：**<br/><br/>shadowh511: <pre><p>Heroku uses the <a href="https://github.com/heroku/heroku-buildpack-go#example" rel="nofollow">heroku</a> tag, so add <code>// +build heroku</code> to heroku-specific implementation files.</p></pre>shackra: <pre><p>Wonderful!</p> <p>I wonder why this is not in the documentation</p></pre>shadowh511: <pre><p>Where in the documentation would you like it to be? I work for heroku and can get a doc fix made very quickly.</p></pre>