It seems none of them (except the overview GLEP 57) are implemented yet, although they are roughly 6-8 years old.
What is holding it back? Is it just that we don't have a PM implementation yet or is it some political nonsense and PMS blocking progress again? I am not criticizing the portage team in any way here. I just want to push for some attention. -- http://www.gentoo.org/proj/en/glep/glep-0057.html http://www.gentoo.org/proj/en/glep/glep-0058.html http://www.gentoo.org/proj/en/glep/glep-0059.html http://www.gentoo.org/proj/en/glep/glep-0060.html http://www.gentoo.org/proj/en/glep/glep-0061.html https://bugs.gentoo.org/show_bug.cgi?id=64258 http://thread.gmane.org/gmane.linux.gentoo.portage.devel/2709