GNU bug report logs - #56877
29.0.50; Built-in packages are not always package-installed-p

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Matt Armstrong <matt <at> rfc20.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 29.0.50; Built-in packages are not always package-installed-p
Date: Mon, 01 Aug 2022 13:15:25 -0700

Before `package--initialized' is set non-nil a call to
(package-installed-p PACKAGE) returns nil for symbols naming built-in
packages. After `package--initialized' is non-nil the same call returns
non-nil.

I discovered this by accident when I figured out this use-package form
caused Emacs to contact GNU ELPA during startup:

(use-package project
  :ensure t
  ;; stuff)

For the above use-package calls (package-installed-p 'project), which
returns nil.  Use-package then attempts to install it using package.el,
which causes network activity, etc., and then package.el decides that it
is already installed.  This repeats each time I start Emacs.

There is code in `package-installed-p' that consults
`package-activated-list' when `package--initalized' is non-nil.  This is
the code path I am exercising.  We also have this FIXME:

(defvar package-activated-list nil
  ;; FIXME: This should implicitly include all builtin packages.
  "List of the names of currently activated packages.")

I have a fix prepared, which I will send once i have a bug number.


Configured using:
 'configure --with-native-compilation --with-pgtk'

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
JSON LCMS2 LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 MODULES NATIVE_COMP
NOTIFY INOTIFY PDUMPER PGTK PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS XIM GTK3 ZLIB

Important settings:
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

Major mode: ELisp/l

Minor modes in effect:
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  icomplete-mode: t
  editorconfig-mode: t
  which-key-mode: t
  electric-pair-mode: t
  override-global-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  show-paren-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  temp-buffer-resize-mode: t
  auto-save-visited-mode: t

Load-path shadows:
~/env/elisp/ol-notmuch hides /home/matt/.config/emacs/elpa/ol-notmuch-20220428.1337/ol-notmuch
/home/matt/.config/emacs/elpa/transient-20220717.1713/transient hides /home/matt/git/emacs-build/lisp/transient

Features:
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magit magit-repos magit-apply magit-wip magit-log which-func imenu
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Memory information:
((conses 16 1041704 138279)
 (symbols 48 41342 108)
 (strings 32 237540 12847)
 (string-bytes 1 6538892)
 (vectors 16 112331)
 (vector-slots 8 2502178 111733)
 (floats 8 749 1306)
 (intervals 56 26923 3648)
 (buffers 992 42))

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