root@impala:/usr/local/portage/app-emulation(89)# MAKEOPTS=-j1 emerge -v1 singular These are the packages that would be merged, in order: Calculating dependencies... done! [ebuild R ] sci-mathematics/singular-3.1.7_p1-r4::sage-on-gentoo USE="boost doc emacs examples python readline -flint {-test}" PYTHON_TARGETS="python2_7" 0 KiB Total: 1 package (1 reinstall), Size of downloads: 0 KiB 'MAKEOPTS=-j1 emerge -v1 singular' fails with: WARNING: One or more updates/rebuilds have been skipped due to a dependency conflict: sci-mathematics/singular:0 (sci-mathematics/singular-4.0.2:0/0::gentoo, ebuild scheduled for merge) conflicts with ~sci-mathematics/singular-3.1.7_p1 required by (sci-mathematics/sage-7.0:0/0::sage-on-gentoo, installed) ^ ^^^^^^^^ >>> Verifying ebuild manifests >>> Emerging (1 of 1) sci-mathematics/singular-3.1.7_p1-r4::sage-on-gentoo !!! Fetched file: Singular-3-1-7p1.tar.gz VERIFY FAILED! !!! Reason: Insufficient data for checksum verification !!! Got: !!! Expected: MD5 RMD160 SHA1 SHA256 SHA512 WHIRLPOOL * Fetch failed for 'sci-mathematics/singular-3.1.7_p1-r4', Log file: * '/var/tmp/portage/sci-mathematics/singular-3.1.7_p1-r4/temp/build.log' >>> Failed to emerge sci-mathematics/singular-3.1.7_p1-r4, Log file:
think your fetch is broken.
Is it still current?