Revert "Don't mention non-GNU package archives."

This reverts commit 5daa7a5fd4aced33a2ae016bde5bb37d1d95edf6.
A proper fix will be committed to the emacs-27 branch, and
will be later merged to master.

diff --git a/doc/misc/efaq.texi b/doc/misc/efaq.texi
index 0290e79706511edde273062dba345b643ba8f488..f5f01848f77ff5c3bbbc2bf57f5068cdae615968 100644 (file)
--- a/doc/misc/efaq.texi
+++ b/doc/misc/efaq.texi
@@ -3463,16 +3463,25 @@ see @ref{Packages that do not come with Emacs}.
 @cindex Emacs Lisp List
 @cindex Emacs Lisp Archive
 
-We distribute many packages that extend Emacs, in the
-@uref{https://elpa.gnu.org, GNU ELPA} (``Emacs Lisp Package
-Archive'').  The command @kbd{M-x list-packages} contacts the GNU ELPA
-server and fetches the list of packages that it distributes.  These
-GNU packages are designed for use with Emacs, but we distribute them
-separately from Emacs itself, for reasons of space, and convenience of
-development.  You can browse the resulting @file{*Packages*} buffer to
-see what is available, and then Emacs can automatically download and
-install the packages that you select.  @xref{Packages,,, emacs, The
-GNU Emacs Manual}.
+The easiest way to add more features to your Emacs is to use the
+command @kbd{M-x list-packages}.  This contacts the
+@uref{https://elpa.gnu.org, GNU ELPA} (``Emacs Lisp Package Archive'')
+server and fetches the list of additional packages that it offers.
+These are GNU packages that are available for use with Emacs, but are
+distributed separately from Emacs itself, for reasons of space, etc.
+You can browse the resulting @file{*Packages*} buffer to see what is
+available, and then Emacs can automatically download and install the
+packages that you select.  @xref{Packages,,, emacs, The GNU Emacs Manual}.
+
+There are other, non-GNU, Emacs Lisp package servers, including:
+@uref{https://melpa.org, MELPA}; and
+@uref{https://marmalade-repo.org, Marmalade}.  To use additional
+package servers, customize the @code{package-archives} variable.  Be
+aware that installing a package can run arbitrary code, so only add
+sources that you trust.  Also, packages hosted on non-GNU package
+servers may encourage or require you to install and use non-free
+software; for example, MELPA is known to host some packages that do
+this.
 
 The @uref{https://lists.gnu.org/mailman/listinfo/gnu-emacs-sources,
 GNU Emacs sources mailing list}, which is gatewayed to the