[DRE-maint] Bug#1038935: schleuder: fails to upgrade buster -> bullseye -> bookworm: NoMethodError: undefined method `preparable='

[Andreas Beckmann]

On 24/06/2023 02.22, Georg Faerber wrote:
> I believe that's caused by ruby-arel, the attached patches fix the issue
> in my tests.

Shouldn't these conflicts rather be in ruby-activerecord?
As I understand the history, arel has been merged into activerecord (5 
years ago, probably version 6.0.x) and the "old" arel 9 is no longer 
compatible with current activerecord 6.1.x. This is probably unrelated 
to schleuder (which only exposes the bug).
Interestingly this didn't happen on buster->bullseye upgrades, but 
perhaps arel 9 was still compatible with activerecord 6.0.x.

Should ruby-arel be RM:ed?
Note: one reverse build dependency
# Broken Build-Depends:
ruby-premailer-rails: ruby-arel

> Andreas, are you able to test these in your environment?

I'll give it a try... yes, the conflict against ruby-arel fixes the 
upgrade path.

Andreas,
who has no clue at all about ruby