CODEWITHSUNDEEP
emacselpa
Thomas
Thomas

Reputation: 2163

How to rebuild ELPA packages after upgrade of Emacs

I just upgraded GNU Emacs from 23 to 24 on MacOS and some ELPA installed packages stopped working. One of them is AucTeX. Deleting it and reinstalling it through the package manager made it work again, but I don't want to do this by hand for every package. I'm slightly confused that I find nothing about that on the Internet.

Don't the .elc need to be recompiled for a new version of Emacs? Why isn't this a feature of package.el?

Upvotes: 72

Views: 20591

Answers (5)

Shepmaster
Shepmaster

Reputation: 430841

There is now package-recompile-all to re-byte-compile all installed packages, which is a bit shorter than the existing answer.

(package-recompile-all)

Byte-compile all installed packages.
This is meant to be used only in the case the byte-compiled files
are invalid due to changed byte-code, macros or the like.

  Probably introduced at or before Emacs version 29.1.

Upvotes: 3

WIZARDELF
WIZARDELF

Reputation: 3885

my recipe after emacs 25:

  1. in .emacs (define your packages list):
(custom-set-variables
 '(package-selected-packages
   (quote
      (browse-kill-ring helm undo-tree use-package)))
  1. in a terminal:
$ rm -rf ~/.emacs.d/elpa/*
  1. in emacs:
(progn (package-refresh-contents)
    (package-install-selected-packages)
    (byte-recompile-directory package-user-dir nil 'force))

Upvotes: 3

Nordlöw
Nordlöw

Reputation: 12138

This works for me on Emacs 25.1 and 26:

(defun package-reinstall-all-activated-packages ()
  "Refresh and reinstall all activated packages."
  (interactive)
  (package-refresh-contents)
  (dolist (package-name package-activated-list)
    (when (package-installed-p package-name)
      (unless (ignore-errors                   ;some packages may fail to install
                (package-reinstall package-name))
        (warn "Package %s failed to reinstall" package-name)))))

Upvotes: 10

user355252
user355252

Reputation:

You do not need to re-install all packages. The packages itself are likely fine, however, they need to be re-compiled, because Emacs Lisp byte code is generally not compatible across major versions.

To re-compile all packages, type M-: (byte-recompile-directory package-user-dir nil 'force). After restarting Emacs, packages should work fine again.

Upvotes: 134

zck
zck

Reputation: 2762

The variable package-activated-list holds the list of packages we're interested in. So we just need to install each one again. We don't need to explicitly delete them; calling package-install will blow away an old version.

Put this code in a scratch buffer and evaluate it (that is, put your cursor at the end, and press C-x C-e):

(dolist (package-name package-activated-list)
  (package-install package-name))

Upvotes: 5

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