I would like to see portage download packages that are required for other ebuilds whilst it is building the current one. eg. if you run emerge -uD world and get told that it is going to emerge 30 packages, portage should check for what files need to be downloaded for these ebuilds and download them in the background while it is building the one it is currently up to. This should speed up operations as you won't have to wait until the current ebuild is finished before the next one starts a download. Especially on larger packages where it can seem like forever downloading the file before it started building. Reproducible: Always
FEATURES=parallel-fetch *** This bug has been marked as a duplicate of bug 1661 ***