在Emacs中安装了“package-install”(elpa)的软件包是如何加载的? [英] How are the packages installed with 'package-install'(elpa) in Emacs loaded?
问题描述
我在Emacs中使用elpa安装了一些软件包, code> package-install 是 package.el
的一部分,您可以使用 describe-功能
。从 package.el
文档:
;;在启动时,我们将设置加载路径和信息路径
;;我们将加载软件包的自动加载。如果一个包的
;;依赖关系不可用,我们不会激活该包。
所以在每个包中都有一个文件
NAME-autoloads.el
整个包包含在 package-user-dir
下:
(setq package-user-dir〜/ .emacs.d / site-lisp / package-install)
(require'package )
每个包也包含 NAME-pkg.el
带包版本和说明。例如here.re文件与 tabbar
包相关:
package-install#这是我的package-user-dir
└──tabbar-2.0.1#每个包dir都在单独的目录
├ ──tabbar-autoloads.el#这个文件在启动时加载
├──tabbar.el#包本身。在这种情况下,它只是一个文件
└──tabbar-pkg.el#关于包管理的包的信息
引用手册: 39.1.1摘要:启动时的操作顺序:
15。如果package-enable-at-startup不为零,它将调用函数package-initialize来激活任何已安装的Emacs Lisp软件包。
package-initialize
然后调用 package-activate
,然后调用 package-activate-1
以加载 NAME-autoload.el
结束:
(load(expand-file-name(concat name-autoloads)pkg-dir)nil t)
I have installed some packages by using elpa in my Emacs, but how are they loaded when launching Emacs?
package-install
is a part of package.el
-- which You can see with describe-function
. From package.el
documentation:
;; At activation time we will set up the load-path and the info path,
;; and we will load the package's autoloads. If a package's
;; dependencies are not available, we will not activate that package.
So in every package there's a file
NAME-autoloads.el
and this file is loaded at start up.
The whole package is contained under the package-user-dir
:
(setq package-user-dir "~/.emacs.d/site-lisp/package-install")
(require 'package)
Each package also contains NAME-pkg.el
with package version and description. For example here're files related to tabbar
package:
package-install # that's my package-user-dir
└── tabbar-2.0.1 # each package dir is in the separate dir
├── tabbar-autoloads.el # this file is loaded at start up
├── tabbar.el # the package itself. In this case it is just a single file
└── tabbar-pkg.el # information about the package for package managment
To quote the manual: 39.1.1 Summary: Sequence of Actions at Startup:
15. If package-enable-at-startup is non-nil, it calls the function package-initialize to activate any optional Emacs Lisp package that has been installed.
package-initialize
is then calls package-activate
which in turn calls package-activate-1
which ends with loading NAME-autoload.el
:
(load (expand-file-name (concat name "-autoloads") pkg-dir) nil t)
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