Created attachment 679368 [details]
emerge --info as required
After running emerge --sync, and then '-uDNp', it told me:
[ebuild rR ~] net-wireless/gr-osmosdr-0.2.0
After successfully rebuilding it, portage tells me it needs to be rebuilt again. I've retried it a couple of times.
Any suggestions on how to fix this? At the moment it is not a problem, but it would be nice to fix.
we need to collect some more information. Is only net-wireless/gr-osmosdr-0.2.0 rebuilt, or are there other packages too?
We can not help you efficiently via bug tracker. The bug tracker aims rather on specific problems in .ebuilds and less on individual systems.
I have had very good experience on the gentoo IRC  with questions like this. Of course there are also forums and mailing lists [2,3].
I hope you understand, that I will close the bug here therefore and wish you good luck on one of the mentioned channels .
Please reopen the ticket in order to provide an indication for an specific error in an ebuild or any gentoo related product.
Yes. It is only gr-osmosdr at the moment. I have had this happen before many years ago, and will say that I see this type of error maybe a couple of times a decade (I've been a Gentoo user since 2001). My experience is that it normally happens during major portage tree changes, and often resolve itself after a couple of months.
Since this type of bug is so intermittent and difficult to track down, I understand if you wish to close it. I was just bring it to people's attention.
If "this is only happening to me", then I will flush and regen the portage/repo trees, as well as look at my package accept keywords -- to see if I have some weird dependencies.