GNU bug report logs - #15201
24.2; extensions/enhancements to package.el

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

From: Ryan Davis <zenspider <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.2; extensions/enhancements to package.el
Date: Tue, 27 Aug 2013 16:37:49 -0700

I know that using cl is frowned upon... but I'm writing this code to be
compatible with 24.2 so I can't rely on cl-lib (since this is an
extension to the system used to install cl-lib). I'm only using it for
set-difference and am open to modifications to make it more
portable/acceptable. You can see this code in:

https://github.com/zenspider/package/blob/master/package%2B.el#L70-L104

  (require 'cl)

  (defun package-version-for (name)
    "Returns the installed version for a package with a given NAME."
    (package-desc-vers (cdr (assoc name package-alist))))

  (defun package-delete-by-name (name)
    "Deletes a package by NAME"
    (message "Removing %s" name)
    (package-delete (symbol-name name)
                    (package-version-join (package-version-for name))))

  (defun package-maybe-install (name)
    "Installs a package by NAME, but only if it isn't already installed."
    (unless (package-installed-p name)
      (message "Installing %s" name)
      (package-install name)))

  (defun package-deps-for (pkg)
    "Returns the dependency list for PKG or nil if none or the PKG doesn't exist."
    (let ((v (cdr (assoc pkg package-alist))))
      (and v (package-desc-reqs v))))

  (defun package-transitive-closure (pkgs)
    (let ((deps '()))
      (dolist (pkg pkgs deps)
        (add-to-list 'deps pkg)
        (dolist (new-pkg (mapcar 'car (package-deps-for pkg)))
          (add-to-list 'deps new-pkg)))))

  (defun package-cleanup (packages)
    "Delete installed packages not explicitly declared in PACKAGES."
    (let ((removes (set-difference (mapcar 'car package-alist)
                                   (package-transitive-closure packages))))
      (mapc 'package-delete-by-name removes)))

;;; finis

In GNU Emacs 24.2.1 (x86_64-apple-darwin12.2.0, NS apple-appkit-1187.34)
of 2012-09-20 on greed.local
Windowing system distributor `Apple', version 10.3.1187
Configured using:
`configure '--prefix=/usr/local/Cellar/emacs/24.2' '--without-dbus'
'--enable-locallisppath=/usr/local/share/emacs/site-lisp'
'--infodir=/usr/local/Cellar/emacs/24.2/share/info/emacs' '--with-ns'
'--disable-ns-self-contained''

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: nil
  value of $XMODIFIERS: nil
  locale-coding-system: nil
  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
  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:
s-x <escape> x r e p <tab> o <tab> r <tab> <return
>

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Message #8 received at 15201 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Ryan Davis <zenspider <at> gmail.com>
Cc: 15201 <at> debbugs.gnu.org
Subject: Re: bug#15201: 24.2; extensions/enhancements to package.el
Date: Tue, 27 Aug 2013 21:12:54 -0400

> I know that using cl is frowned upon... but I'm writing this code to be
> compatible with 24.2 so I can't rely on cl-lib (since this is an
> extension to the system used to install cl-lib). I'm only using it for
> set-difference and am open to modifications to make it more
> portable/acceptable. You can see this code in:

Use of CL is generally discouraged, and is not allowed at run-time for
packages included in Emacs.  IOW As long as your code is not meant to be
included in Emacs you don't need to worry too much about it.

OTOH, the code you sent doesn't work with the package.el that's in
Emacs's current trunk (e.g. package-delete now only takes a single argument).

One more thing: I like the idea of having a declarative list of
"packages that should be installed" so as to be able to delete packages
that were installed as dependencies but aren't needed any more.  So I'd
welcome patches that add such functionality to package.el.


        Stefan

Message #13 received at 15201 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Ryan Davis <zenspider <at> gmail.com>
Cc: 15201 <at> debbugs.gnu.org
Subject: Re: bug#15201: 24.2; extensions/enhancements to package.el
Date: Thu, 15 Jul 2021 08:00:26 +0200

(I'm going through old bug reports that unfortunately weren't resolved
at the time.)

It seems like the conclusion here was that the proposed helper functions
didn't seem very vital to add, so I'm closing this bug report.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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