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gigalixir · May 28, 2020 · ae7cf1e · ae7cf1e
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@@ -649,6 +649,8 @@ What packages are available on Gigalixir?
 Gigalixir's stacks are based on Heroku's stacks so anything you find here, you can find on Gigalixir.
 https://devcenter.heroku.com/articles/stack-packages#installed-ubuntu-packages
 
+To find what stack you are on, run `gigalixir apps:info` or `gigalixir ps`. If you are on gigalixir-16, check the heroku-16 column. Same for gigalixir-18 and heroku-18.
+
 You can also explore and verify by SSH'ing into your container. For example
 
 .. code-block:: bash