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harrifeng/multi_emacs_config.org

Created April 29, 2021 03:36
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multi_emacs_config.org

Install Doom alongside other configs (with Chemacs2)

Chemacs2 is a bootloader for Emacs. It allows you to switch between multiple Emacs configurations. Here is a quick guide for setting it up with Doom Emacs as the default config:

  1. First, install Doom somewhere: 
    git clone https://github.com/hlissner/doom-emacs ~/doom-emacs
~/doom-emacs/bin/doom install
  2. Move aside any existing config and install Chemacs2 as your new ~/.emacs.d: 
    [ -f ~/.emacs ] && mv ~/.emacs ~/.emacs.bak
[ -d ~/.emacs.d ] && mv ~/.emacs.d ~/.emacs.legacy
git clone https://github.com/plexus/chemacs2.git ~/.emacs.d
  3. Create ~/.emacs-profiles.el with a list of your Emacs profiles. This file is structured like a .dir-locals.el file. Here is an example with Doom (as the default), Spacemacs, and Prelude: 
    (("default"   . ((user-emacs-directory . "~/doom-emacs")))
 ("legacy" . ((user-emacs-directory . "~/.emacs.legacy")))
 ("spacemacs"   . ((user-emacs-directory . "~/spacemacs"))))

To start Emacs with a specific config, use the --with-profile option:

emacs --with-profile spacemacs
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