Re: Unable to install from elpa

[Max Nikulin <manikulin@gmail.com>]

On 26/05/2023 15:23, Ihor Radchenko wrote:
> Max Nikulin writes:
> 
>> I have realized that the command is specified in the README.org file, so
>> it is mentioned twice on https://elpa.gnu.org/packages/org.html
> 
>> However prior to Emacs-29.1 built-in packages are filtered-out from
>> completion list and ignored by non-interactive command
>> ...
>> Should `list-packages' recipe be used in the README.org file instead?
> 
> The first instance of M-x package-install <RET> org <RET> comes from
> ELPA itself. Considering that ELPA is targeting various Emacs versions,
> it should probably be corrected there first.

Generally agree, but I am skeptical concerning changes in ELPA since 
only minority of packages are affected.

> The second instance in README.org may then be altered according to what
> ELPA devs do.

Users may open README.org outside of ELPA. "To install a more recent 
version..." is is not enough even for coming Emacs-29 since the default 
value for `package-install-upgrade-built-in' is nil.

Another pitfall with install instruction in an .org file is that if the 
file is opened in Emacs < 29 then package.el generates mixed-versions 
.elc files. A precaution is necessary that `list-packages' should be run 
in a clean emacs session, not the one with README.org.