Rsync allows building against its bundled zlib or the system zlib via the --with(out)-included-zlib flag to configure. This hasn't been done previously as rsync has a customized zlib bundled to aid in its stream compression. However, since rsync-3.1.1, it has been able to use the bundled zlib (by way of --old-compress) or system zlib (by way of --new-compress) to allow syncing with rsyncd that was built with the opposite zlib choice of the client. When using system zlib, PORTAGE_RSYNC_EXTRA_OPTS should include "--new-compress" to allow syncing against gentoo's rsync servers. Otherwise, emerge --sync will fail.
Thank you for your contribution. The base-system team is currently discussing the potential negative influence on our portage rsync mirrors. Once we have come to a positive conclusion we might apply this change.
Adding the portage team to the CC list
Given the incompatibility system zlib would cause, I would suggest disabling it by default for a lengthy period. Maybe we could enable system zlib by default several years after new compression becomes the default option in rsync.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=b2140e1b35fe5a8a1703c199ef5080c786fe4b49 commit b2140e1b35fe5a8a1703c199ef5080c786fe4b49 Author: Lars Wendler <polynomial-c@gentoo.org> AuthorDate: 2020-06-16 10:15:16 +0000 Commit: Lars Wendler <polynomial-c@gentoo.org> CommitDate: 2020-06-16 10:15:32 +0000 net-misc/rsync: Bump to version 3.2.0_pre2 Added support for system-zlib Bug: https://bugs.gentoo.org/666934 Package-Manager: Portage-2.3.101, Repoman-2.3.22 Signed-off-by: Lars Wendler <polynomial-c@gentoo.org> net-misc/rsync/Manifest | 1 + net-misc/rsync/metadata.xml | 2 + net-misc/rsync/rsync-3.2.0_pre2.ebuild | 114 +++++++++++++++++++++++++++++++++ 3 files changed, 117 insertions(+)
Looks like this can be closed.
