Simple Layers and Configuration

Most language support and many other amazing features can be added to Emacs from many hundreds of packages created by the community. It does seem that there is a package for just about everything you want to do.

Spacemacs uses Layers that organise these packages and the configuration to make them work seamlessly together. For example, the Clojure layer is composed of 9 different packages that you would otherwise have to know about and install and then get them to work together with a bit of configuration code. Layers make things very simple, requiring only one word to be added to the Spacemacs configuration file.

Add commic strip about this

was this xkd or something similar... the one where butterflies flap their wings and a storm is created the other side of the world.

Spacemacs provides a well tested configuration file called ~/.spacemacs that provides lots of sensible defaults and makes customising your experience very easy. This file is created during the Spacemacs installation.

Simple Configuration

The ~/.spacemacs configuration file is composed of three important sections

Section Purpose
dotspacemacs/layers Layers provide a simple way to add language support and tooling to Spacemacs. A layer can contain elisp configuration and packages from Melpa/Elpa. Individual Emacs packages can also be added (if they do not exist in any layer)
dotspacemacs/init configuration applied when Spacemacs first starts, eg evil or holy mode(emacs), themes, fonts, full screen, recent files, etc
dotspacemacs/user-config Add your own customisation here

Example .spacemacs configuration

Review the authors current .spacemacs configuration file for examples of changes and the dotfile configuration section of the Spacemacs documentation for a complete overview.

Opening and reloading the configuration file

Spacemacs provides specific keybindings for opening and reloading the ~/.spacemacs configuration file.

Vim Normal Emacs Description
SPC f e d M-m f e d open the ~/.spacemacs file
SPC f e R M-m f e R reload the configuration from ~/.spacemacs

Restart after changing configuration

The bigger a change you are making in the ~/.spacemacs configuration file, the more desirable it is to restart Emacs. For example, if you are adding a large layer or multiple layers and pulling in a number of packages. Unless its a small change, then restart Emacs with SPC q r

Adding a Layer

Simply open the ~/.spacemacs file and add the name of the layer you want in the section dotspacemacs-configuration-layers. Some layers also take additional configuration in the form of variables in the layer definition.

See the Spacemacs documentation for a list of layers or open the help in Spacemacs SPC h SPC to list all the layers, pressing RET on a layer name to read about it.

Notes for existing Emacs users

If you have configured Emacs before, you can consider the .spacmacs file as a replacement for the init.el file you would otherwise use to define your Emacs configuration.

Installing packages via the packages-list-packages method is ignored by Spacemacs. Any packages installed in this way will be ignored.

If no layer exists for a package, you can use a package without a layer

You can add what ever elisp you like to the dotspacemacs/user-config section of the ~/.spacemacs configuration file.

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