Synchronize tags across machines without a mail server

Synchronize tags across machines without a mail server

[Pierre Neidhardt]

[-- Attachment #1: Type: text/plain, Size: 2529 bytes --]

Hi,

I know this has been asked a couple of times, and it seems that the
current solutions are:

- nmbug
  (http://notmuch.198994.n3.nabble.com/multiple-machine-tagging-td831812.html#a4031973
  http://notmuch.198994.n3.nabble.com/PATCH-v4-nmbug-Add-an-init-command-td4032972.html)
  It seems that "nmbug init" has not been merged yet.  Using the patch
  above I wasn't able to add an "upstream".  Am I missing the obvious?

- muchsync (http://www.muchsync.org/): Requires our own mail server if I
  understand correctly.


What I want is sync the `notmuch dump' of non-automatic tags across my
systems, considering I don't run my own webserver.

So far, I came up with the following:

--8<---------------cut here---------------start------------->8---
(require 'seq)

(unless (boundp 'notmuch-command)
  ;; So that this file can be use in external scripts without require
  ;; notmuch.el.
  (setq notmuch-command "notmuch"))

(defun notmuch-all-tags ()
  (split-string
   (with-output-to-string
     (with-current-buffer standard-output
       (call-process notmuch-command nil t
                     nil "search" "--output=tags" "--exclude=false" "*")))))

(defvar notmuch-unimportant-tags '("attachment" "deleted" "draft" "encrypted"
                                   "flagged" "inbox" "passed" "replied" "sent"
                                   "signed" "unread"))
(defvar notmuch-dump-file (expand-file-name "~/personal/mail/notmuch.dump"))

(defun notmuch-dump-important-tags (&optional file)
  "Dump notmuch tag database to `notmuch-dump-file'.
Messages with only `notmuch-unimportant-tags' are ignored."
  (interactive)
  (setq file (or file notmuch-dump-file))
  (let* ((important-tags (seq-difference (notmuch-all-tags) notmuch-unimportant-tags))
         (tags-arg (cons (concat "tag:" (car important-tags))
                         (cl-loop for tag in (cdr important-tags)
                                  append (list "or" (concat "tag:" tag))))))
    (apply 'call-process notmuch-command nil `(:file ,file) nil
           "dump" tags-arg)))
--8<---------------cut here---------------end--------------->8---

This will save all non-trivial / non-automated tags.  I can call
`notmuch-dump-important-tags' manually from Emacs or automatically
(e.g. mcron job or similar sync script) with

	emacs --quick --batch --load=$HOME/.emacs.d/lisp/init-notmuch-sync.el \
				-f notmuch-dump-important-tags

Thoughts?

-- 
Pierre Neidhardt
https://ambrevar.xyz/

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 487 bytes --]

Re: Synchronize tags across machines without a mail server

[Ralph Seichter]

* Pierre Neidhardt:

> muchsync (http://www.muchsync.org/): Requires our own mail server if I
> understand correctly.

No. If you have a machine A with notmuch already set up, and want to
sync to machine B, you only need SSH access from B to A (plus notmuch
and muchsync installed on B).

-Ralph

Re: Synchronize tags across machines without a mail server

[Dan Čermák]

[-- Attachment #1: Type: text/plain, Size: 700 bytes --]

Ralph Seichter <abbot@monksofcool.net> writes:

> * Pierre Neidhardt:
>
>> muchsync (http://www.muchsync.org/): Requires our own mail server if I
>> understand correctly.
>
> No. If you have a machine A with notmuch already set up, and want to
> sync to machine B, you only need SSH access from B to A (plus notmuch
> and muchsync installed on B).

That's correct if you are fine with machine B only syncing with machine
A via muchsync and no longer with your mail servers via IMAP (or at
least I don't know a way how to make that work).

>
> -Ralph
> _______________________________________________
> notmuch mailing list
> notmuch@notmuchmail.org
> https://notmuchmail.org/mailman/listinfo/notmuch

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 832 bytes --]

Re: Synchronize tags across machines without a mail server

[Ralph Seichter]

* Dan Čermák:

> Ralph Seichter <abbot@monksofcool.net> writes:
>
>> * Pierre Neidhardt:
>>
>>> muchsync (http://www.muchsync.org/): Requires our own mail server if I
>>> understand correctly.
>>
>> No. If you have a machine A with notmuch already set up, and want to
>> sync to machine B, you only need SSH access from B to A (plus notmuch
>> and muchsync installed on B).
>
> That's correct if you are fine with machine B only syncing with machine
> A via muchsync and no longer with your mail servers via IMAP (or at
> least I don't know a way how to make that work).

Sorry for quoting the whole history here, but I don't see how your
comment relates to me stating that muchsync does not require a "mail
server"? If the MTA can deliver into Maildir (like Postfix can), one
does not need an IMAP server at all.

Muchsync can perform both content and metadata synchronisation, which
takes care of my needs. I run it as a background job on my notebook. An
IMAP server can be in the mix somewhere, but is not needed. That's all I
am trying to say.

-Ralph