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Fix package initialization on Emacs 27 

Before Emacs 27, the init file was responsible for initializing the package
manager by calling `package-initialize'.  Emacs 27 changed the default
behavior: It now calls `package-initialize' before loading the init file.
This behavior would prevent Spacemacs's own package initialization from
running.  However, Emacs 27 also loads the "early init" file (this file)
before it initializes the package manager, and Spacemacs can use this early
init file to prevent Emacs from initializing the package manager.  (See
<http://git.savannah.gnu.org/cgit/emacs.git/commit/?id=24acb31c04b4048b85311d794e600ecd7ce60d3b>.)

Earlier Emacs versions do not load the early init file and do not initialize
the package manager before loading the init file, so this file is neither
needed nor loaded on those versions.
This commit is contained in:
Miciah Masters 2018-02-19 11:29:24 -05:00 committed by syl20bnr
parent ef36dbb2a4
commit 83954658e2
1 changed files with 24 additions and 0 deletions
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early-init.el Normal file
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;;; early-init.el --- Spacemacs Early Init File
;;
;; Copyright (c) 2018 Sylvain Benner & Contributors
;;
;; Author: Miciah Dashiel Butler Masters <miciah.masters@gmail.com>
;; URL: https://github.com/syl20bnr/spacemacs
;;
;; This file is not part of GNU Emacs.
;;
;;; License: GPLv3
;; Before Emacs 27, the init file was responsible for initializing the package
;; manager by calling `package-initialize'. Emacs 27 changed the default
;; behavior: It now calls `package-initialize' before loading the init file.
;; This behavior would prevent Spacemacs's own package initialization from
;; running. However, Emacs 27 also loads the "early init" file (this file)
;; before it initializes the package manager, and Spacemacs can use this early
;; init file to prevent Emacs from initializing the package manager. (See
;; <http://git.savannah.gnu.org/cgit/emacs.git/commit/?id=24acb31c04b4048b85311d794e600ecd7ce60d3b>.)
;;
;; Earlier Emacs versions do not load the early init file and do not initialize
;; the package manager before loading the init file, so this file is neither
;; needed nor loaded on those versions.
(setq package-enable-at-startup nil)