ocaml-maint team mailing list archive

[christos pontikis <1868502@xxxxxxxxxxxxxxxxxx>]

Hello, same problem here.

It seems that @Helge Meinhard workaround WORKS. Thanks!

In my case:
Workstation: Xubuntu Focal 20.04 LTS
Laptop.....: Xubuntu Bionic 18.04 LTS
Server.....: Debian 10 Buster

(1)
I didn't uninstall unison unison-all unison-all-gtk from Focal

(2)
I copied the binaries 
/usr/bin/unison-2.48.4 and /usr/bin/unison-2.48.4-gtk
from Bionic to Focal

(3)
I deleted all ~/.unison/fp* (in all machines)

Various tasks between Focal and (Bionic or Buster) are working.

-- 
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OCaml Maintainers, which is subscribed to unison in Ubuntu.
https://bugs.launchpad.net/bugs/1868502

Title:
  Synchronization with earlier Ubuntu versions or a recent Debian
  version fails

Status in unison package in Ubuntu:
  Confirmed

Bug description:
  Any synchronization I want to do with my server (Debian buster) fails
  with the following message:

  > Fatal error: Server: Fatal error during unmarshaling (input_value: ill-formed message),
  > possibly because client and server have been compiled with differentversions of the OCaml compiler.

  Indeed, buster uses OCaml 4.05.0, focal uses 4.08.1. eoan used 4.05.0,
  as did the prior versions, including bionic, which all still
  synchronize fine. The current Windows version also synchronizes with
  that version.

  Although intentionally using an old software version for compatibility
  is not a good thing, in this case it might be necessary. The whole
  point of unison is its interoperability.

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