Hi Detlef, this is mentioned in the docs but IMHO isn't strongly emphasized enough:
When installing or upgrading org-mode always run emacs -q to avoid loading init. I had a lot of trouble when switching to elpa and this was the only way to get it to work. In the end to be sure I deleted the old org-mode library from the disk (using list-packages) and made doubly sure that there were no remnants. Then restart with emacs -q and install from list-packages from elpa.
If you don't do this you run a strong risk of getting a mixed install.
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Message: 9
Date: Mon, 3 Jan 2022 08:41:41 +0100
From: Detlef Steuer <steuer@hsu-hh.de>
To: emacs-orgmode@gnu.org
Subject: Re: [patch] improved: add TTL as defcustom to ox-icalendar
Message-ID: <20220103084141.72d2f384@hsu-hh.de>
Content-Type: text/plain; charset="us-ascii"
Thank you for the hints.
Attached a diff -u version.
The patch in principle is unrelated to nextcloud. That's just my
use case. The addiditional TTL setting gives a hint to clients
when to reload an imported ics file that was exported from org.
Is there any document how to setup an org-mode developer environment?
Normally I use git, but I even struggled to use org from elpa instead
of the built-in version, so I avoided touching this house of cards :-)
Probably I should use a git clone instead of elpa, if I want to work
on org?
Thx for the feedback!
Detlef
