How to fix emerge error: Couldn't download 'ATOM". Aborting

[znavko]

Hello, Funtoo users! I want to know how to update world when a dependepcy package could not be downloaded by Portage (error 404 Not found or timeout reason).

# emerge -avuDN --with-bdeps=y --newrepo @world
....
--2018-02-17 18:24:05--  ftp://oss.sgi.com/projects/xfs/cmd_tars/xfsprogs-4.5.0.tar.gz
  (try: 3) => ‘/var/cache/portage/distfiles/xfsprogs-4.5.0.tar.gz’
Connecting to oss.sgi.com|192.48.178.134|:21... failed: Connection timed out.
Giving up.

!!! Couldn't download 'xfsprogs-4.5.0.tar.gz'. Aborting.
 * Fetch failed for 'sys-fs/xfsprogs-4.5.0', Log file:
 *  '/var/tmp/portage/sys-fs/xfsprogs-4.5.0/temp/build.log'

>>> Failed to emerge sys-fs/xfsprogs-4.5.0, Log file:

>>>  '/var/tmp/portage/sys-fs/xfsprogs-4.5.0/temp/build.log'

The web-site oss.sgi.com is not available, the archive xfsprogs not found there. I added this to https://bugs.funtoo.org/browse/FL-4795

To fix an issue I did this: found source here https://www.kernel.org/pub/linux/utils/fs/xfs/xfsprogs/

Downloaded requested version xfsprogs-4.5.0.tar.xz. But it was XZ archive, but Portage uses ebuild where GZ archive is using, I created xfsprogs-4.5.0.tar.gz and placed here: /var/cache/portage/distfiles/xfsprogs-4.5.0.tar.gz

I run emerge @world again but it attempts to dowbload from site, not using cache dir. What to do?

 I did not emerged this package manually with `emerge -1 =sys-fs/xfsprogs-4.5.0` cause I do not need this in my world -- want it rest dependency only.