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Re: Request to add Package to GNU ELPA

From: Philip Kaludercic
Subject: Re: Request to add Package to GNU ELPA
Date: Thu, 06 Apr 2023 15:46:11 +0000

Philip Kaludercic <philipk@posteo.net> writes:

> Philip Kaludercic <philipk@posteo.net> writes:
>> 1. Update package.el to be published on ELPA
> It might be that this would be enough to publish package.el with support
> back to 27.1, with the help of Compat:

Stefan fell out of the CCs, so I've added him again since I am most
interested in what he thinks of these changes, added here again as a

>From 1fcf56725848984ef6da50ef2b7a130e1ffd3282 Mon Sep 17 00:00:00 2001
From: Philip Kaludercic <philipk@posteo.net>
Date: Wed, 5 Apr 2023 23:16:39 +0200
Subject: [PATCH] Prepare package.el to be published on GNU ELPA

* lisp/emacs-lisp/package.el: Add Compat as a dependency.
(package--native-compile-async): Check if 'native-comp-available-p' is
(lm-homepage, lm-website): Use backwards-compatible alias
(package-buffer-info): Call 'lm-maintainer' if 'lm-maintainers' is not
(describe-package-1): Avoid using 'make-separator-line' if not bound.
(package-report-bug): Expand 'custom--standard-value' definition.

Check out these discussions for more context:
 lisp/emacs-lisp/package.el | 39 +++++++++++++++++++++++++-------------
 1 file changed, 26 insertions(+), 13 deletions(-)

diff --git a/lisp/emacs-lisp/package.el b/lisp/emacs-lisp/package.el
index 0258ed52bee..6b68c84a211 100644
--- a/lisp/emacs-lisp/package.el
+++ b/lisp/emacs-lisp/package.el
@@ -5,9 +5,12 @@
 ;; Author: Tom Tromey <tromey@redhat.com>
 ;;         Daniel Hackney <dan@haxney.org>
 ;; Created: 10 Mar 2007
-;; Version: 1.1.0
+;; Version: 1.1.1
 ;; Keywords: tools
-;; Package-Requires: ((tabulated-list "1.0"))
+;; Package-Requires: ((emacs "26.1") (compat ""))
+;; This is a GNU ELPA :core package.  Avoid functionality that is not
+;; compatible with the version of Emacs recorded above.
 ;; This file is part of GNU Emacs.
@@ -147,6 +150,7 @@
 (eval-when-compile (require 'subr-x))
 (eval-when-compile (require 'epg))      ;For setf accessors.
 (eval-when-compile (require 'inline))   ;For `define-inline'
+(require 'compat nil 'noerror)
 (require 'seq)
 (require 'tabulated-list)
@@ -1124,7 +1128,8 @@ package--native-compile-async
   "Native compile installed package PKG-DESC asynchronously.
 This assumes that `pkg-desc' has already been activated with
-  (when (native-comp-available-p)
+  (when (and (fboundp 'native-comp-available-p)
+             (native-comp-available-p))
     (let ((warning-minimum-level :error))
       (native-compile-async (package-desc-dir pkg-desc) t))))
@@ -1160,9 +1165,10 @@ package--prepare-dependencies
 (declare-function lm-header "lisp-mnt" (header))
 (declare-function lm-header-multiline "lisp-mnt" (header))
-(declare-function lm-website "lisp-mnt" (&optional file))
+(declare-function lm-homepage "lisp-mnt" (&optional file))
 (declare-function lm-keywords-list "lisp-mnt" (&optional file))
 (declare-function lm-maintainers "lisp-mnt" (&optional file))
+(declare-function lm-maintainer "lisp-mnt" (&optional file))
 (declare-function lm-authors "lisp-mnt" (&optional file))
 (defun package-buffer-info ()
@@ -1195,7 +1201,7 @@ package-buffer-info
             (or (lm-header "package-version") (lm-header "version")))
            (pkg-version (package-strip-rcs-id version-info))
            (keywords (lm-keywords-list))
-           (website (lm-website)))
+           (website (lm-homepage)))
       (unless pkg-version
          (if version-info
              (error "Unrecognized package version: %s" version-info)
@@ -1208,10 +1214,13 @@ package-buffer-info
        :kind 'single
        :url website
        :keywords keywords
-       :maintainer
+       :maintainer (lm-maintainer)
        ;; For backward compatibility, use a single string if there's only
        ;; one maintainer (the most common case).
-       (let ((maints (lm-maintainers))) (if (cdr maints) maints (car maints)))
+       (if (fboundp 'lm-maintainers)
+           (let ((maints (lm-maintainers)))
+             (if (cdr maints) maints (car maints)))
+         (lm-maintainer))
        :authors (lm-authors)))))
 (defun package--read-pkg-desc (kind)
@@ -2302,8 +2311,6 @@ package-strip-rcs-id
       ;; to make sure we use a "canonical name"!
       (if l (package-version-join l)))))
-(declare-function lm-website "lisp-mnt" (&optional file))
 (defun package-install-from-buffer ()
   "Install a package from the current buffer.
@@ -2902,8 +2909,11 @@ describe-package-1
       ;; Insert news if available.
       (when news
-        (insert "\n" (make-separator-line) "\n"
-                (propertize "* News" 'face 'package-help-section-name)
+        (newline)
+        (when (fboundp 'make-separator-line)
+          (insert (make-separator-line))
+          (newline))
+        (insert (propertize "* News" 'face 'package-help-section-name)
         (insert-file-contents news))
@@ -4571,8 +4581,11 @@ package-report-bug
       (dolist (ent (get (cdr group) 'custom-group))
         (when (and (custom-variable-p (car ent))
                    (boundp (car ent))
-                   (not (eq (custom--standard-value (car ent))
-                            (default-toplevel-value (car ent))))
+                   (not (eq
+                         ;; We are not using `custom--standard-value'
+                         ;; to retain compatibility for Emacs 27.
+                         (eval (car (get (car ent) 'standard-value)) t)
+                         (default-toplevel-value (car ent))))
                    (file-in-directory-p (car group) (package-desc-dir desc)))
           (push (car ent) vars))))
     (dlet ((reporter-prompt-for-summary-p t))

elpa-admin.el appears to be handling the changes well, I'll still have
to try and install it on an older Emacs to see if everything works as

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