I have two modules in my application. One for projects and other one for purchases. I'm inheriting project module into purchase module for getting project infos, employee infos etc.

In the end the necessity occurs to inherit purchase module into project module for displaying purchase into projects via one2many field. (Circular dependency or inheritance) 

But it's not possible with this way because I have already inherited project module into purchase module. Is there any way to do that? (My entire code starts to broke)

**Basicly I'm getting project informations into purchase menu and then I want to get purchase informations into project module back.

Regards