unison 2.51.2 reporting version 2.27.72

[DavidLaidlaw]

I just updated to the latest unison on my mac. I had been running 2.48, which was working. With the new 2.51 version, the command "unison -version" command reports:

      2018-07-08 16:56:48.502 Unison[2802:2877110] Calling nonGuiStartup
      unison version 2.27.72

The previous version reported:

      unison version 2.48.4

I don't know if the version is actually correct, but the message is wrong. But it no longer connects to the unison that I am running on a remote system, which is version 2.48.

I am able to deactivate the new version and activate @2.48.4_1+symlink and get a working installation.

[mf2k (Frank Schima)]

In the future, please use WikiFormatting and fill in the Port field.

[ryandesign (Ryan Carsten Schmidt)]

Replying to DavidLaidlaw:

I just updated to the latest unison on my mac. I had been running 2.48, which was working. With the new 2.51 version, the command "unison -version" command reports:

      2018-07-08 16:56:48.502 Unison[2802:2877110] Calling nonGuiStartup
      unison version 2.27.72

The previous version reported:

      unison version 2.48.4

I don't know if the version is actually correct, but the message is wrong.

I am not able to reproduce that problem.

$ port -v installed unison
The following ports are currently installed:                                                                                                            
  unison @2.51.2_0+aqua (active) platform='darwin 17' archs='x86_64' date='2018-07-08T17:55:58-0500'   
$ unison -version
2018-07-08 18:12:55.590 Unison[32199:1392277] Calling nonGuiStartup                                                                                     
unison version 2.51.2 (ocaml 4.05.0)  

But it no longer connects to the unison that I am running on a remote system, which is version 2.48.

I am able to deactivate the new version and activate @2.48.4_1+symlink and get a working installation.

It is true that you must use the same version of unison on both ends of the connection. See #14172 for some previous discussion.

I am not sure why the unison port was updated to version 2.51.2 since that is a development and the stable version is still 2.48.4.

[ryandesign (Ryan Carsten Schmidt)]

Replying to ryandesign:

It is true that you must use the same version of unison on both ends of the connection. See #14172 for some previous discussion.

It's also explained in the port's notes:

$ port notes unison
unison has the following notes:
  Unison has always suggested using the same version across machines
  accessing the the same files. If you want to keep the previous
  version, you can reactivate the previous version; see:
  
  https://trac.macports.org/wiki/howto/InstallingOlderPort

[MarcusCalhoun-Lopez (Marcus Calhoun-Lopez)]

I am also unable to reproduce this particular problem.
unison -version returns

2018-07-08 16:53:27.251 Unison[79180:77734419] Calling nonGuiStartup
unison version 2.51.2 (ocaml 4.05.0)

[MarcusCalhoun-Lopez (Marcus Calhoun-Lopez)]

Replying to ryandesign:

I am not sure why the unison port was updated to version 2.51.2 since that is a development and the stable version is still 2.48.4.

I am sorry if I inadvertently updated to a development version.
I am afraid I still cannot find an indicator for which versions are development and which are stable.
Do you happened to have a reference available?

According to the ​release notes, 2.51.2 was needed for APFS.

[MarcusCalhoun-Lopez (Marcus Calhoun-Lopez)]

I am closing this ticket since errors cannot be reproduced.
Please feel free to reopen if more information becomes available.