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Somewhat related: I am starting a new job soon and I want to get Emacs setup "right" this time. I've been using Aquamacs for the last several years, but I'm wondering if there is a better way to use Emacs on the Mac these days?

As part of this, I want to get my .emacs under version control and shared between computers so I have the same settings everywhere. Is there a good way to do that with Emacs packages installed through MELPA/ELPA?

0xCMP
I like brew installing `emacs-mac`[0] which installs a port run by a developer in Japan. My favorite feature of it (among other amazing osx specific changes) is the sub-pixel scrolling support in emacs.

When you setup your `init.el` you can call `(package-install x)` and if the package is already installed it'll do nothing but just make sure it's there.

If you wanted the whole thing figured out ahead of time I recommend using Spacemacs[1]

[0]: https://github.com/railwaycat/homebrew-emacsmacport [1]: http://spacemacs.org