Why do some apps automatically require the selection of other apps?

Question

hello,
is there a list of which apps require the installation of others?
thanks,

Fabien Pinckaers (fp) · Accepted Answer

It's mostly a technical reason, eg: eCommerce requires Website and Sale because you need a website to run a shop, and Sale to manage orders.
Note that for the free for one app offer, you get the app (eCommerce) as well as it's dependencies (website & sale) as part of the free plan.
Over time, we try to remove dependencies (ex: in v10, eSign will not depend on website anymore. Same for mass mailing) but some will always remain because of the string integration of the apps in Odoo.

Xavier Brochard · Answer

You can easily display all dependencies :
display apps in view list,
select some or all of them
on the left button that will be shown,  choose Print / Technical Guide
Now you have a big PDF with all dependencies (and a lot more informations).
Another way it to browse the Odoo install directory under "addons" and to extract all dependencies from "__openerp__.py" files (each module (or addon or App) contains at least one file with a depend list. Like for example :
'depends': ['base']

Ermin Trevisan · Answer

Apps do require the installation of others if they are dependent on others by inheritance for example. There is no such comprehensive list and I can also not see a use for it, but you can see the dependencies in the app's description and/or in the corresponding __openerp__.py file.

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