To make it support sys-foo/foo[useflags] as pkgcore do see http://www.pkgcore.org/trac/pkgcore/browser/doc/extended-atom-syntax.rst Now you get some thing like this laptop1 ~ # emerge -pv udev[test] These are the packages that would be merged, in order: Calculating dependencies ... done! emerge: there are no ebuilds built with USE flags to satisfy "udev[test]". !!! One of the following packages is required to complete your request: - sys-fs/udev-164-r1 (Change USE: +test) Reproducible: Always
I think we can consider this as a subset of bug 258371, since if we add an option to automatically satisfy USE dependencies, it should apply to atoms given on the command line.
This already works with emerge --autounmask, which is enabled by default since portage-2.1.10. However, it requires that you run the command a second time after making the required config changes (for which you can use --autounmask-write to have the config changes written automatically).
