GNU bug report logs - #12721
24.2; package-installed-p behavior on emacs startup

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

From: kostafey <kostafey <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.2; package-installed-p behavior on emacs startup
Date: Wed, 24 Oct 2012 16:45:40 +0400

[Message part 1 (text/plain, inline)]

How the function package-installed-p should behave on emacs startup if
some package is already installed? It seems that it returns nil for
installed package on emacs startup.

Here is the full .emacs file (used for this test):

(require 'package)
(message "**** auto-complete is installed: %s ****" (package-installed-p
'auto-complete))

auto-complete package is installed for this moument, but during emacs
sturtup *Messages* buffer shows:

**** auto-complete is installed: nil ****

But after sturtup the evaluation of the expression

(message "**** auto-complete is installed: %s ****" (package-installed-p
'auto-complete))

returns:

**** auto-complete is installed: t ****

But how it is possible to install just not already installed packages on
startup. For this moument all packages are re-downloaded and reinstalled
for me during every emacs startup.


In GNU Emacs 24.2.1 (i386-mingw-nt5.1.2600)
 of 2012-08-29 on MARVIN
Windowing system distributor `Microsoft Corp.', version 5.1.2600
Configured using:
 `configure --with-gcc (4.6) --cflags
 -ID:/devel/emacs/libs/libXpm-3.5.8/include
 -ID:/devel/emacs/libs/libXpm-3.5.8/src
 -ID:/devel/emacs/libs/libpng-dev_1.4.3-1/include
 -ID:/devel/emacs/libs/zlib-dev_1.2.5-2/include
 -ID:/devel/emacs/libs/giflib-4.1.4-1/include
 -ID:/devel/emacs/libs/jpeg-6b-4/include
 -ID:/devel/emacs/libs/tiff-3.8.2-1/include
 -ID:/devel/emacs/libs/gnutls-3.0.9/include'

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: RUS
  value of $XMODIFIERS: nil
  locale-coding-system: cp1251
  default enable-multibyte-characters: t

Major mode: Fundamental

Minor modes in effect:
  tooltip-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<menu-bar> <buffer> C-a <help-echo> <help-echo> <help-echo>
<menu-bar> <file> <open-file> <help-echo> <help-echo>
<tool-bar> <open-file> <down-mouse-1> <mouse-1> C-x
C-e <help-echo> <help-echo> <menu-bar> <buffer> C-a
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <menu-bar>
<help-menu> <send-emacs-bug-report>

Recent messages:
**** auto-complete is installed: nil ****
memoize-wrap-frame-local: Symbol's function definition is void: gensym
Quit
Loading vc-git...done
**** auto-complete is installed: t ****
"**** auto-complete is installed: t ****"

Load-path shadows:
None found.

Features:
(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
easymenu mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231
mailabbrev gmm-utils mailheader sendmail regexp-opt rfc2047 rfc2045
ietf-drums mm-util mail-prsvr mail-utils vc-git finder-inf package
tabulated-list time-date tooltip ediff-hook vc-hooks lisp-float-type
mwheel dos-w32 disp-table ls-lisp w32-win w32-vars tool-bar dnd fontset
image fringe lisp-mode register page menu-bar rfn-eshadow timer select
scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame cham
georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese hebrew greek romanian slovak czech european ethiopic
indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple
abbrev minibuffer loaddefs button faces cus-face files text-properties
overlay sha1 md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote make-network-process multi-tty emacs)

[Message part 2 (text/html, inline)]

Message #8 received at 12721 <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: kostafey <kostafey <at> gmail.com>
Cc: 12721 <at> debbugs.gnu.org
Subject: Re: bug#12721: 24.2; package-installed-p behavior on emacs startup
Date: Wed, 24 Oct 2012 13:32:27 -0400

kostafey wrote:

> How the function package-installed-p should behave on emacs startup if
> some package is already installed? It seems that it returns nil for
> installed package on emacs startup.

It needs package-initialize to have been run, which is only done after
your init file has been read, as documented eg in C-h v
package-enable-at-startup. Maybe you could run package-initialize
explicitly and set package-enable-at-startup to nil? Or use
after-init-hook?

Message #11 received at 12721 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: kostafey <kostafey <at> gmail.com>
Cc: 12721 <at> debbugs.gnu.org
Subject: Re: bug#12721: 24.2; package-installed-p behavior on emacs startup
Date: Wed, 24 Oct 2012 13:53:37 -0400

> (require 'package)
> (message "**** auto-complete is installed: %s ****" (package-installed-p
> 'auto-complete))

IIUC rather than (require 'package) you need to (package-initialize).


        Stefan

Message #14 received at 12721 <at> debbugs.gnu.org (full text, mbox):

From: kostafey <kostafey <at> gmail.com>
To: 12721 <at> debbugs.gnu.org
Subject: Re: bug#12721: 24.2; package-installed-p behavior on emacs startup
Date: Thu, 25 Oct 2012 09:13:35 +0400

[Message part 1 (text/plain, inline)]

> IIUC rather than (require 'package) you need to (package-initialize).

Thank you a lot!
(package-initialize) works fine.
The issue should be closed.

[Message part 2 (text/html, inline)]

Message #19 received at 12721-done <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: kostafey <kostafey <at> gmail.com>
Cc: 12721-done <at> debbugs.gnu.org
Subject: Re: bug#12721: 24.2; package-installed-p behavior on emacs startup
Date: Thu, 25 Oct 2012 08:39:15 -0400

>> IIUC rather than (require 'package) you need to (package-initialize).
> Thank you a lot!
> (package-initialize) works fine.

I've changed package-installed-p to signal an error if called before
package-initialize.  Thank you, closing,


        Stefan

Message #22 received at 12721-done <at> debbugs.gnu.org (full text, mbox):

From: Richard Stallman <rms <at> gnu.org>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 12721-done <at> debbugs.gnu.org, kostafey <at> gmail.com
Subject: Re: bug#12721: 24.2; package-installed-p behavior on emacs startup
Date: Thu, 25 Oct 2012 21:33:39 -0400

Why make package-installed-p something different from featurep?

-- 
Dr Richard Stallman
President, Free Software Foundation
51 Franklin St
Boston MA 02110
USA
www.fsf.org  www.gnu.org
Skype: No way! That's nonfree (freedom-denying) software.
  Use Ekiga or an ordinary phone call

Message #25 received at 12721-done <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: rms <at> gnu.org
Cc: 12721-done <at> debbugs.gnu.org, kostafey <at> gmail.com
Subject: Re: bug#12721: 24.2; package-installed-p behavior on emacs startup
Date: Thu, 25 Oct 2012 22:05:51 -0400

> Why make package-installed-p something different from featurep?

`featurep' typically indicates if a particular file has been loaded,
whereas `package-installed-p' indicates whether the package is available
(e.g. can be loaded).


        Stefan

Message #28 received at 12721-done <at> debbugs.gnu.org (full text, mbox):

From: Richard Stallman <rms <at> gnu.org>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 12721-done <at> debbugs.gnu.org, kostafey <at> gmail.com
Subject: Re: bug#12721: 24.2; package-installed-p behavior on emacs startup
Date: Fri, 26 Oct 2012 21:14:52 -0400

    `featurep' typically indicates if a particular file has been loaded,
    whereas `package-installed-p' indicates whether the package is available
    (e.g. can be loaded).

Should it be `package-available-p'?

-- 
Dr Richard Stallman
President, Free Software Foundation
51 Franklin St
Boston MA 02110
USA
www.fsf.org  www.gnu.org
Skype: No way! That's nonfree (freedom-denying) software.
  Use Ekiga or an ordinary phone call

Message #31 received at 12721-done <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: rms <at> gnu.org
Cc: 12721-done <at> debbugs.gnu.org, kostafey <at> gmail.com
Subject: Re: bug#12721: 24.2; package-installed-p behavior on emacs startup
Date: Fri, 26 Oct 2012 22:43:58 -0400

>     `featurep' typically indicates if a particular file has been loaded,
>     whereas `package-installed-p' indicates whether the package is available
>     (e.g. can be loaded).
> Should it be `package-available-p'?

It's probably not worse, but I don't see why it would be better.


        Stefan

Message #34 received at 12721-done <at> debbugs.gnu.org (full text, mbox):

From: Richard Stallman <rms <at> gnu.org>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 12721-done <at> debbugs.gnu.org, kostafey <at> gmail.com
Subject: Re: bug#12721: 24.2; package-installed-p behavior on emacs startup
Date: Sat, 27 Oct 2012 14:19:38 -0400

    >     `featurep' typically indicates if a particular file has been loaded,
    >     whereas `package-installed-p' indicates whether the package is available
    >     (e.g. can be loaded).
    > Should it be `package-available-p'?

    It's probably not worse, but I don't see why it would be better.

I guess it depends how clear the current name is.
It wasn't clear to me that "installed" means "installed in your system",
but maybe most people will understand it.

-- 
Dr Richard Stallman
President, Free Software Foundation
51 Franklin St
Boston MA 02110
USA
www.fsf.org  www.gnu.org
Skype: No way! That's nonfree (freedom-denying) software.
  Use Ekiga or an ordinary phone call

Message #37 received at 12721-done <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: rms <at> gnu.org
Cc: 12721-done <at> debbugs.gnu.org, kostafey <at> gmail.com
Subject: Re: bug#12721: 24.2; package-installed-p behavior on emacs startup
Date: Sat, 27 Oct 2012 17:54:06 -0400

> I guess it depends how clear the current name is.
> It wasn't clear to me that "installed" means "installed in your system",
> but maybe most people will understand it.

Yes, I think it is fairly logical, matching the
`package-install' command.


        Stefan

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