Hi,

I would like to inform you in addition of ACCEPT_KEYWORDS and somewhat
new ACCEPT_LICENSE, portage now uses ACCEPT_PROPERTIES.
As for LICENSE, this var let the user mask some packages considering the
PROPERTIES line.

Contrary to ACCEPT_LICENSE, the default value is "*". This means every
PROPERTIES value will be accepted.
Actually, the only usage I know is for interactive: if you want to mask
interactive ebuilds, you will just have to set
ACCEPT_PROPERTIES="-interactive" then emerge/portage will consider the
ebuild is not visible.

You can also set /etc/portage/package.properties to have a per-package
configuration.

It was needed to fix a blocker for packagekit with interactive ebuilds.
So, it's a bit selfish ;)

Thanks,
Mounir