Zend certified PHP/Magento developer

M2: no_NO not recognised despite installed via community engineering lang pack

bin/magento info:language:list

This return nb_NO and nn_NO for Norwegian, however no_NO does not exist.
I can see some packages having the no_NO language file though (Stripe, Mageplaza).

I tried to installed the Crowdin language pack for Norwegian via composer as suggested by Crowdin (they don’t have a nb_NO or nn_NO branch):

composer require community-engineering/language-no_no

Then I get the following error when running setup:upgrade

no_NO argument has invalid value, please run info:language:list for
list of available locales

So of course my website does not translate to Norwegian.

How can I fix that ?