Sorry, but this advice is terribly wrong.
rm -r ~/.unison
This will not only delete *all* and not just the synchronization states,
that cause trouble, it will furthermore delete all config files and
includes.
So don't do that.
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Unison does not support syncing between two different versions. Hence,
syncing across different ubuntu releases this problem will necessarily
occur unless they contain many unison versions in the future.
Workaround:
1) On both machines delete the unison cache:
rm -r ~/.unison
2) Make sure no
To make it work, I had also to replace unison-gtk, not only unison. So,
what finally helped was:
Problemsituation: I had updated laptop A to a newer version of ubuntu.
When trying to synchronize with with laptop B (Debian), and therefore
did start unison-gtk on lapotop A, I got the error we
@christos pontikis (pontikis) this saved my day, thanks!
As a small improvement: you do not need to remove all cache, just the
fp* files that have been created after you started using the new
version.
I think that this is the kind of software that would benefit greatly the
snap/appimage/flatpack
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
So I also found a workaround that works for me so far. It is also
downgrading to the bionic versions.
First of all, I downloaded the packages from bionic and installed them
manually (only unison and unison-all, though) as suggested by Sebastien
Koechlin and Helge Meinhard said. Then, I created a
Thank you very much for providing the links.
Unfortunately it didn't do the trick. Now the error message is:
Uncaught exception Failure("input_value: ill-formed message")
Raised at file "/build/unison-Y9EcQW/unison-2.48.4/lwt/lwt.ml", line 126,
characters 16-23
Called from file
Instead of recompiling, I downgraded unison and unison-gtk with Bionic
Beaver packages. There is no dependency issues.
Warning: you will not have any security update.
https://packages.ubuntu.com/bionic/unison
https://packages.ubuntu.com/bionic/unison-gtk
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Same issue here. Two machines upgraded to Focal. unison version is
2.48.4 on both machines. Yet I get the error message as in the bug
description. For recompiling the packages I need some advice how to do
that.
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Bugs, which
I deleted all fp* files with a creation date newer than my unsuccessful
attempt to run a focal client against a bionic server.
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https://bugs.launchpad.net/bugs/1868502
Title:
@helge-meinhard - could you please specify what cache file(s) you
removed and whether it was client or server side or both?
Unison creates numerous cache files in $HOME/.unison/ but their specific
meaning and content is mostly unclear.
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In fact, further investigation shows that the binary built with the
OCamL 4.05 compiler is working fine. The error message quoted in my
previous post is obviously caused by a cache file corrupted by
previously running the binary from deb (compiled with OCamL 4.08).
Deleting the cache file fixes
I tried to narrow down the problem by re-building unison with OCamL 4.05
on my Focal (20.04) client (no ocaml deb package installed):
- Downloaded OCamL 4.05.0, ran make and make install
$ which ocamlopt
/usr/local/bin/ocamlopt
$ ocamlopt -v
The OCaml native-code compiler, version 4.05.0
Standard
Same problem. Upgraded client to Focal, server is Bionic. Both have unison 2.48
and I have the 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."
FWIW, Bionic ships OCamL 4.05, Focal 4.08.
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https://bugs.launchpad.net/bugs/1868502
Title:
Synchronization with earlier Ubuntu versions or a recent Debian
version fails
To manage
Same here. Upgraded client to Focal, server is Bionic. Same version
numbers of unison, but the cryptic, misspelled message about
incompatible ocaml versions appears.
It would be nice to get this fixed, or at least hints about how to work
around the problem...
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Affects me to. Host is Bionic and Desktop is Focal.
I tried installing the Bionic unison package on focal, but then I get
other errors:
Uncaught exception Failure("input_value: ill-formed message")
Raised at file "/build/unison-Y9EcQW/unison-2.48.4/lwt/lwt.ml", line 126,
characters 16-23
Called
Can confirm this affects me. Upgraded a computer to 20.04, trying to
sync with a 18.04 computer using Unison 2.48.4 and receive the same
error message. Please compile unison 2.48.4 with the correct version of
OCamel!
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This is also a problem between Ubuntu LTS versions.
Specifically: I get the same error message when running unison on 20.04 (Focal
Fossa) and trying to unison sync with a remote computer running 18.04 (Bionic
Bever).
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: unison (Ubuntu)
Status: New => Confirmed
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Title:
Note that this is related to #1568459. But this time it can be fixed by
using the same unison version but compiling it with a different OCaml.
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