161 lines
4.5 KiB
Org Mode
161 lines
4.5 KiB
Org Mode
#+title: Emacs Configuration
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#+author: Geir Okkenhaug Jerstad
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#+email: geir@geokkjer.eu
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#+options: toc:nil num:nil
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#+PROPERTY: header-args:emacs-lisp :tangle ~/.emacs.d/init.el
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* About
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My attempt at a litterate configuration for Emacs.
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* Prep
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** Copilot Authentication
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To use GitHub Copilot, you need to authenticate with your GitHub account. This is done by running the following command in Emacs:
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after installing the copilot package:
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Try to trigger the GitHub OAuth flow from within Emacs:
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#+BEGIN_SRC emacs-lisp :eval yes
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(call-interactively 'copilot-auth)
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#+END_SRC
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* Configuration
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** Customize UI
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Here we set up the UI to our liking. We disable the menu bar, tool bar, and scroll bar, and set the font size to 14pt.
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#+BEGIN_SRC emacs-lisp
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;; disable startup screen
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(setq inhibit-startup-screen t)
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;; disable menu bar
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(menu-bar-mode -1)
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;; disable tool bar
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(tool-bar-mode -1)
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;; disable scroll bar
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(scroll-bar-mode -1)
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;; set font size
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(set-face-attribute 'default nil :height 140)
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#+END_SRC
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Set up doom modeline, which is a nice status line for Emacs. We set it up to show the current buffer name and the current line number.
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#+BEGIN_SRC emacs-lisp
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;; install doom-modeline if not already installed
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(unless (package-installed-p 'doom-modeline)
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(package-refresh-contents)
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(package-install 'doom-modeline))
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(require 'doom-modeline)
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;; enable doom-modeline
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(doom-modeline-mode 1)
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;; set up doom-modeline to show the current buffer name and line number
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(setq doom-modeline-buffer-file-name-style 'truncate-with-project)
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#+END_SRC
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** Set up package management
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#+BEGIN_SRC emacs-lisp
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;; set up package archives
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(require 'package)
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(setq package-archives
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'(("melpa" . "https://melpa.org/packages/")
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("gnu" . "https://elpa.gnu.org/packages/")))
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(package-initialize)
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#+END_SRC
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** Install use-package
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#+BEGIN_SRC emacs-lisp
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;; install use-package if not already installed
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(unless (package-installed-p 'use-package)
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(package-refresh-contents)
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(package-install 'use-package))
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(require 'use-package)
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;; ensure that use-package is always used
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(setq use-package-always-ensure t)
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#+END_SRC
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* Code Completion and ide features
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** LSP Mode
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Here we install lsp-mode and lsp-ui, which are the core components of the LSP (Language Server Protocol) support in Emacs. We also set up keybindings for common LSP commands.
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#+BEGIN_SRC emacs-lisp
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;; install lsp-mode and lsp-ui if not already installed
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(unless (package-installed-p 'lsp-mode)
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(package-refresh-contents)
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(package-install 'lsp-mode))
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(unless (package-installed-p 'lsp-ui)
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(package-refresh-contents)
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(package-install 'lsp-ui))
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(require 'lsp-mode)
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(require 'lsp-ui)
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;; enable lsp-mode in programming buffers
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(add-hook 'prog-mode-hook #'lsp)
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#+END_SRC
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** GitHub Copilot
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Here we install from MELPA, enable it in all prog-modes and bind keys for completion:
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#+BEGIN_SRC emacs-lisp
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;; ensure Copilot is installed
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(unless (package-installed-p 'copilot)
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(package-refresh-contents)
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(package-install 'copilot))
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(require 'copilot)
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;; turn on in programming buffers
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(add-hook 'prog-mode-hook #'copilot-mode)
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;; keybindings: M-TAB to trigger, TAB to accept
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(define-key copilot-mode-map (kbd "M-TAB") #'copilot-complete)
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(define-key copilot-completion-map (kbd "<tab>") #'copilot-accept-completion)
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#+END_SRC
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** Language support
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Here we install and configure support for various programming languages. We use the `use-package` macro to ensure that the packages are installed and configured correctly.
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#+BEGIN_SRC emacs-lisp
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;; install and configure javscript-mode
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(use-package javscript-mode
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:ensure t
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:mode "\\.js\\'")
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;; lsp support for javascript
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(use-package lsp-javascript
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:ensure t
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:mode "\\.js\\'")
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;; install and configure gleam-mode
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(use-package gleam-mode
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:ensure t
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:mode "\\.gleam\\'")
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#+END_SRC
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;; lsp support for gleam
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(use-package lsp-gleam
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:ensure t
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:mode "\\.gleam\\'")
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#+END_SRC
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** NixOS from Emacs
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Editing Nix files and doing NixOS admin stuff like nixos-rebuild boot --upgrade
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Run the commands with M-x shell-command
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#+BEGIN_SRC emacs-lisp
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;; NixOS commands
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(defun nixos-upgrade ()
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"Run 'nixos-rebuild boot --upgrade' in a shell."
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(interactive)
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(shell-command "nixos-rebuild boot --upgrade"))
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(defun nixos-switch ()
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"Run 'nixos-rebuild switch' in a shell."
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(interactive)
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(shell-command "nixos-rebuild switch"))
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#+END_SRC
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#+BEGIN_SRC emacs-lisp
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;; install nix-mode
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(use-package nix-mode
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:ensure t
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:mode "\\.nix\\'")
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;; install nix-repl
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(use-package nix-repl
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:ensure t
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:mode "\\.nix\\'")
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;; install nixpkgs
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(use-package nixpkgs
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:ensure t
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:mode "\\.nix\\'")
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#+END_SRC
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