Let's say an ebuild has a dep like this: dev-foo/foo[bar] Per PMS, 2-style USE deps (i.e. without (-) or (+)) are valid only on packages that have bar in IUSE_EFFECTIVE. Therefore, it would be nice if repoman could detect the case when the dep (USE-dep excluded) matches at least one package version that doesn't have that flag, and complain about it. The most important problems found this way would be USE dependencies that force old version of a package implicitly due to replaced/removed USE flags.
Please add a few genb0rk repo test ebuilds that make it possible to properly detect that. You will need a few, at least one that trips the check and one that doesn't. We can then work on getting the code to check for that.
repoman support has been removed per bug 835013. Please file a new bug (or, I suppose, reopen this one) if you feel this check is still applicable to pkgcheck and doesn't already exist.
