[gentoo-user] Any nice tools for emerge dependency resolution listing?

[Mark David Dumlao]

Hi!
I'm wondering if anyone's written a script that looks deep into the
build dependencies of some package foo, and gives you a list of
ebuilds you need to unmask to build it. Immediate build dependencies
could easily be shown using the ebuild itself, and deep dependencies
could be shown using equery something, but I just want to focus on
dependencies you need to unmask when building.

I usually just manually iterate through emerge -uDNtav world/something
to make something like that happen, and it's just hit me that this
sounds like a chore that's bound to have bugged someone.

I'm not looking for a tool that writes my package.keywords/* for me,
I'd like to do that myself, but the iteration process is more painful
than it should be "manually". If there's none I was wondering what
kinds of challenges would it take to write one in python as that
sounds like a cool exercise to try out.
-- 
This email is:    [ ] actionable   [ ] fyi        [x] social
Response needed:  [ ] yes          [x] up to you  [ ] no
Time-sensitive:   [ ] immediate    [ ] soon       [x] none