x11-libs/guile-gtk needs to be rebuild after some changes involving libtool and guile. I can't tell exactly what changes; the symptoms for me were (in temporal order): - sys-devel/libtool-2.2.4 was enabled for ~, breaking packages linking against libltdl.so.3 - dev-scheme/guile was among the broken packages, thus was recompiled - sci-electronics/gwave failed to build (see also package.mask) The problem was that the build process for linking against guile-gtk required -lguile-ltdl at some time, which was not provided by guile any more. Re-emerging guile-gtk solved the issue. Running revdep-rebuild did not show any problems, it must have been something like pkgconfig. Reproducible: Always Bug filed on request from Denis Dupeyron <calchan (at) gentoo org> to ensure the information will not be lost.
Ok Marijn, you won that one. ;o) I was assigning it to sci-electronics and CCing you, but you were faster. So I'll just CC sci-electronics then. By the way, thanks Christian. Denis.
Actually it seems jer/rej was faster.