Re: Multiple versions of Org in load-path problem

[David Masterson <dsmasterson@gmail.com>]

Ihor Radchenko <yantar92@posteo.net> writes:

> David Masterson <dsmasterson@gmail.com> writes:
>
>> I went so far as to add the following to early-init.el:
>>
>> (if (featurep 'org) (unload-feature 'org))
>> (add-to-list 'load-path (expand-file-name "~/.emacs.d/elpa/org-9.6")
>> (load-library "org")
>>
>> The load-library still fails with the org-assert-version error.
>
> Indeed. It is to be expected. M-x package-install should not err here
> though. In theory.

My testing says that, in early-init.el, Org is not yet a feature, so the
built-in Org-9.3 is not yet loaded and the first 'if' fails. Adding the
path for Org-9.6 should put it at the front of the load-path and
(hopefully) override Org-9.3 if it is in the load-path (I think I
checked that).  The error in the load-library is, therefore, a problem
with Org-9.6 installed by package-install. 

> I suggest you to read `org-assert-version'. It aims to catch the
> situation above and similar.

This is chicken and egg problem.  I can't use 'org-assert-version'
unless I can get Org to load.

> Note, however, that installation problem is different. Or rather it
> should be different.
>
>> Could it be that, when you package-install Org-9.6, it runs through a
>> check where (I think) it compiles the package?  I get a lot of warnings
>> and 34(?) failed files.  Could it be that some of the files are not
>> built and, so, when I load-library, I'm picking up some of the wrong
>> files from the built-in Org-9.3?  Do we need to remove all versions of
>> Org that is not the current version from the load-path at the very
>> beginning of org.el to ensure no fall-through?  Kind of a hack, but...
>
> Maybe. It should not. That's why I raised
> https://debbugs.gnu.org/cgi/bugreport.cgi?bug=59882
> I'd like to see if Emacs devs have anything to say here.

Good. I'm not used to bug reporting in Emacs, so I raised a question on
use-package in emacs-devel@gnu.org, but they pointed me at your bug.
I'll see if I can add anything there.

-- 
David Masterson