How could I tell portage a package is already installed?

[Ciges]

Hi

 

Is there a way to tell portage that a package is already installed?  I would like that a package from a dependency not to be installed and the easiest way could be to "pretend" it is already in the system.

 

Any idea?

[Oleg Vinichenko]

yes, there is a package.provided feature. adding category such as:

x11-drivers/nvidia-drivers-381.22 into /etc/portage/package.provided will make portage think that this exact version installed on users box, when in reality it's not. notice a syntax, if you need specific version (381.22) you don't put atom ("=" in this example) in front of category, unlike it's needed for masks or unmasks or keywords.