Hi, now that I have sage-on-gentoo installed I can't do world updates with the -D option anymore. Looks like a portage quirk to me. There seem to be at least two problems: I have sci-mathematics/singular in my world file and the -D option forces portage to think that I insist on the latest version. Therefore it collides with sage-on-gentoo insisting on 3.1.3: sci-mathematics/singular:0 (sci-mathematics/singular-3.1.3.3::gentoo, installed) pulled in by ~sci-mathematics/singular-3.1.3.3 required by (sci-mathematics/sage-5.0-r1::sage-on-gentoo, installed) (sci-mathematics/singular-3.1.4-r1::gentoo, ebuild scheduled for merge) pulled in by (no parents that aren't satisfied by other packages in this slot) There also is an eselect issue. I don't know why, but eselect-blas and eselect-lapack are pulled in, although blocked by the new gsl: [blocks B ] app-admin/eselect-blas ("app-admin/eselect-blas" is blocking sci-libs/gsl-1.15-r2, sci-libs/cblas-reference-20110218) [blocks B ] app-admin/eselect-lapack ("app-admin/eselect-lapack" is blocking sci-libs/gsl-1.15-r2, sci-libs/cblas-reference-20110218) However, without the -D option I just get a warning: WARNING: One or more updates have been skipped due to a dependency conflict: sci-mathematics/singular:0 (sci-mathematics/singular-3.1.4-r1::gentoo, ebuild scheduled for merge) conflicts with ~sci-mathematics/singular-3.1.3.3 required by (sci-mathematics/sage-5.0-r1::sage-on-gentoo, installed) Any ideas? Shall I carry this to the portage mailing list? Cheers, Thomas -- Thomas Kahle http://dev.gentoo.org/~tomka/