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;;; early-init.el -*- lexical-binding: t; coding: utf-8-unix -*-
;;
;; Author: Case Duckworth <acdw@acdw.net>
;; Created: Sometime during Covid-19, 2020
;; Keywords: configuration
;; URL: https://tildegit.org/acdw/emacs
;;
;; This file is NOT part of GNU Emacs.
;;
;;; License:
;;
;; Everyone is permitted to do whatever with this software, without
;; limitation. This software comes without any warranty whatsoever,
;; but with two pieces of advice:
;; - Don't hurt yourself.
;; - Make good choices.
;;
;;; Comentary:
;;
;; Starting with Emacs 27.1, `early-init' is sourced before `package'
;; or any frames. So those are the settings I run in this file.
;;
;;; Code:
;;; Define personal-use constants
(defconst acdw/system (pcase system-type
('gnu/linux :home)
((or 'msdos 'windows-nt) :work)
(_ :other))
"Which system is currently being used.")
(defvar acdw/dir (expand-file-name
(convert-standard-filename "var/")
user-emacs-directory)
"A directory to hold extra configuration and emacs data.")
;;; Speed up init
;; see doom-emacs, et al.
(defconst gc-cons-threshold-basis (* 800 1000)
"The basis value for `gc-cons-threshold' to return to after a jump.
800 KB is Emacs's default `gc-cons-threshold'.")
(defconst gc-cons-percentage-basis 0.1
"The basis value for `gc-cons-percentage' to return to after init.
0.1 is Emacs's default `gc-cons-percentage'.")
(defvar orig-file-name-handler-alist file-name-handler-alist
"The original value of `file-name-handler-alist' will be restored
after init.")
(setq gc-cons-threshold most-positive-fixnum
gc-cons-percentage 0.6
file-name-handler-alist nil)
(defun hook--post-init-reset ()
"Reset `gc-cons-threshold', `gc-cons-percentage', and
`file-name-handler-alist' to their defaults after init."
(setq gc-cons-threshold gc-cons-threshold-basis
gc-cons-percentage gc-cons-percentage-basis)
(dolist (handler file-name-handler-alist)
(add-to-list 'orig-file-name-handler-alist handler))
(setq file-name-handler-alist orig-file-name-handler-alist))
(add-hook 'after-init-hook #'hook--post-init-reset)
;;; Frame settings
(setq default-frame-alist ; Remove most UI
`((tool-bar-lines . 0) ; No tool bar
(menu-bar-lines . 0) ; No menu bar
(vertical-scroll-bars) ; No scroll bars
(horizontal-scroll-bars) ; ... at all
(width . 84) ; A /little/ wider than
; `fill-column' (set later)
(height . 30)
(left-fringe . 8) ; Width of fringes
(right-fringe . 8) ; (8 is default)
(font . ,(pcase acdw/system
(:home "DejaVu Sans Mono 10")
(:work "Consolas 10"))))
frame-inhibit-implied-resize t ; Don't resize randomly
frame-resize-pixelwise t ; Resize by pixels, not chars
)
(defun hook--disable-ui-modes ()
"Disable frame UI using modes, for toggling later."
(dolist (mode ;; each mode is of the form (MODE . FRAME-ALIST-VAR)
'((tool-bar-mode . tool-bar-lines)
(menu-bar-mode . menu-bar-lines)
(scroll-bar-mode . vertical-scroll-bars)
(horizontal-scroll-bar-mode . horizontal-scroll-bars)
))
(let ((setting (alist-get (cdr mode) default-frame-alist)))
(when (or (not setting)
(= 0 setting))
(funcall (car mode) -1)))))
(add-hook 'after-init-hook #'hook--disable-ui-modes)
;;; Bootstrap package manager (`straight.el')
;; 1. Update `exec-path'.
(let ((win-app-dir "~/Applications"))
(dolist (path (list
;; Windows
(expand-file-name "exe" win-app-dir)
(expand-file-name "exe/bin" win-app-dir)
(expand-file-name "Git/bin" win-app-dir)
(expand-file-name "Git/usr/bin" win-app-dir)
(expand-file-name "Git/mingw64/bin" win-app-dir)
(expand-file-name "Everything" win-app-dir)
(expand-file-name "Win-builds/bin" win-app-dir)
(expand-file-name "Z/bin" win-app-dir)
;; Linux
(expand-file-name "bin" user-emacs-directory)
(expand-file-name "~/bin")
(expand-file-name "~/.local/bin")
(expand-file-name "~/usr/bin")
))
(when (file-exists-p path)
(add-to-list 'exec-path path :append))))
;; 1.5. Update $PATH to reflect changes.
(setenv "PATH" (mapconcat #'identity exec-path path-separator))
;; 2. Set `package' and `straight' variables.
(setq package-enable-at-startup nil ; not sure if strictly
; necessary
package-quickstart nil ; ditto
straight-host-usernames '((github . "duckwork")
(gitlab . "acdw"))
straight-base-dir acdw/dir ; don't clutter ~/.emacs.d
)
;; 3. Bootstrap `straight'.
(defvar bootstrap-version)
(let ((bootstrap-file
(expand-file-name
"straight/repos/straight.el/bootstrap.el"
straight-base-dir))
(bootstrap-version 5))
(unless (file-exists-p bootstrap-file)
(with-current-buffer
(url-retrieve-synchronously
(concat "https://raw.githubusercontent.com/"
"raxod502/straight.el/develop/install.el")
'silent 'inhibit-cookies)
(goto-char (point-max))
(eval-print-last-sexp)))
(load bootstrap-file nil 'nomessage))
;;; Message startup time for profiling
(defun hook--message-startup-time ()
"Show Emacs's startup time in the message buffer. For profiling."
(message "Emacs ready in %s with %d garbage collections."
(format "%.2f seconds"
(float-time (time-subtract after-init-time
before-init-time)))
gcs-done))
(add-hook 'emacs-startup-hook #'hook--message-startup-time)
;;; Install `no-littering', pointing both directories at `acdw/dir'. This will
;;; take care of the packages I don't care about configuring.
(straight-use-package 'no-littering)
(setq no-littering-etc-directory acdw/dir
no-littering-var-directory acdw/dir)
(require 'no-littering)
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