How to manage customization when several modules apply changes?
Hi. I am using odoo 11 / 12 (on two different deployements, but anyway the question is pretty much independent from the specific version).
I have been struggling a bit lately because i wanted to apply some changes to a specific report template, but there are already some modules which define changes on the same template, and this leads to several questions, some of which may be applied to customization in general (not only report templates)
1 - in which order are the changes executed? Is the first installed module executed before the subsequent ones? (i.e. if module A deletes an xml block and block B looks for something inside it, i'd expect B to throw an error). Is it possible to check the exact order in which such customizations are applied, and/or to change the order itseff?
2 - The previous point applies to normal views too, but at least in that case i can use "fields view get" using developer mode and get an idea about the structure of the resulting xml (if im not wrong). is there something similar for report templates?
3 - How can i be sure that some changes i make on my module A will not make parts of the system incompatible with subsequent modules that the user may want to install? Probably this is impossible, but maybe i'm missing something?
Thanks in advance, as always.