'emerge -v1 cvxopt' fails with: ... 2018-11-10 14:20:53 (2.13 MB/s) - ‘/usr/local/portage/distfiles_impala/cvxopt-1.2.2.tar.gz’ saved [1889708] !!! Fetched file: cvxopt-1.2.2.tar.gz VERIFY FAILED! !!! Reason: Filesize does not match recorded size !!! Got: 1889708 !!! Expected: 1889717 Refetching... File renamed to '/usr/local/portage/distfiles_impala/cvxopt-1.2.2.tar.gz._checksum_failure_.xutxvlzg' !!! Couldn't download 'cvxopt-1.2.2.tar.gz'. Aborting.
This is https://github.com/cschwan/sage-on-gentoo/issues/529 which has been fixed 4 days ago.