The snap package isn't compatible with the version from macOS homebrew either.
In the end, I just went with the binary tarballs available from https://github.com/bcpierce00/unison/releases The reason for these incompatibilities is described here: https://github.com/bcpierce00/unison/#getting-unison "Beware that Unison uses OCaml's built-in data marshalling, and that this facility is unstable across versions of "ocaml" (the standard implementation of the OCaml language). Additionally, Unison has incompatible changes across minor releases (e.g. 2.48 vs 2.51, but 2.51.2 and 2.51.3 are compatible). Therefore, you must use the same Unison minor version built with the same ocaml version on all systems." To make compatible packages for 16.04/18.04/20.04 would require either a newer OCaml to build the 16.04/18.04 packages, or an older OCaml to build the 18.04/20.04 packages. I do think that the incompatible versions should be reflected in the package naming, e.g. "unison" is a meta-package and "unison-2.51.3-4.12.0" is the actual package. Then potentially multiple versions could be installed and /etc/alternatives/unison could point to the chosen one. But unless someone actually builds these different versions, it doesn't really matter. There are other more modern filesystem synchronization tools available, like Syncthing. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875475 Title: Unison from Ubuntu 20.04 is incompatible with Unison from Ubuntu 18.04, Windows or Mac OS X To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unison/+bug/1875475/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
