I could be wrong, but I don't believe anyone has taken over maintenance of [ann]. The original sources are still in the SVN export to git.puredata.info:

http://git.puredata.info/cgit/svn2git/libraries/ann.git/

If there is interest, we could push this to the pd-externals group on GitHub, add pd-lib-builder support, then someone can take over maintenance. You perhaps? :)

On Apr 11, 2022, at 9:48 AM, pd-list-request@lists.iem.at wrote:

Message: 2
Date: Mon, 11 Apr 2022 09:38:51 +0300
From: Alexandros <adrcki@gmail.com>
To: Pd-List <pd-list@lists.iem.at>
Subject: [PD] Ann external source or 64-bit build?
Message-ID: <92b19048-4b59-2270-9880-f3554d9185f3@gmail.com>
Content-Type: text/plain; charset=UTF-8; format=flowed

I run into [ann] in Pd's website 
(http://puredata.info/Members/dmorelli/ann/ann/) from the Fann homepage 
and downloaded the Linux version, but it's a 32-bit build and Pd can't 
load it. I can't find it in deken. Anyone (IOhannes maybe, since you 
have provided the Linux build) has the source code so I can try to 
compile (any compilation instructions would be great too).

Thanks,
Alexandros

--------
Dan Wilcox
@danomatika
danomatika.com
robotcowboy.com