[Users] Claws installation from a backup

[Ralf Mardorf]

On Fri, 27 Mar 2020 17:27:33 +1100, Peter Richards wrote:
>http://manpages.ubuntu.com/manpages/xenial/en/man1/claws-mail-fancy-plugin.1.html
>
>It is for Ubuntu version 16.04 LTS
>
>I'm assuming if I use this in Kubuntu 19.10 that it will work okay and
>won't 'break' Claws Mail, is that correct please ?

Hi,

16.04 is the last Ubuntu release providing claws-mail-fancy-plugin,
https://packages.ubuntu.com/xenial/claws-mail-fancy-plugin .

The last Ubuntu release providing libwebkitgtk is 18.04
https://packages.ubuntu.com/bionic/libwebkitgtk-1.0-0 .

The repositories for 19.10 neither provide claws-mail-fancy-plugin, nor
the libwebkitgtk dependency. The reason is, that webkitgtk was
discontinued by upstream and that it suffers from critical security
flaws.

On Fri, 27 Mar 2020 09:03:26 +1100, Peter Richards wrote:
>That particular .so file could be on the backup. If it is, can I safely
>use an older version as there doesn't seem to be one for Ubuntu 19.10 ?

No you can't use it, since the dependency tree is completely broken.
For example libwebkitgtk isn't available at all, but even if it would
be available, libwebkitgtk from the 16.04 repositories is e.g. compiled
against libgcc1 6.0.1, but the repositories for 19.10 provide libgcc1
9.2.1. As a point of reference for possible backwards-compatibility see
https://en.wikipedia.org/wiki/Soname .

Regards,
Ralf