Arch Linux

The libbloom package prior to version 1.6-2 was missing a soname link. This has been fixed in 1.6-2, so the upgrade will need to overwrite the untracked soname link created by ldconfig. If you get an error

libbloom: /usr/lib/libbloom.so.1 exists in filesystem

when updating, use

pacman -Suy --overwrite usr/lib/libbloom.so.1

to perform the upgrade.

The update to mariadb 10.4.6-1 and later changes configuration layout as recommended by upstream.

The main configuration file moved from /etc/mysql/my.cnf (and its include directory /etc/mysql/my.cnf.d/) to /etc/my.cnf (and /etc/my.cnf.d/). Make sure to move your configuration.

Instantiated services (like mariadb@foo.service) are no longer configured in separate files (like /etc/mysql/myfoo.cnf). Instead move your configuration to configuration blocks with group suffix in main configuration file, one for each service. A block should look something like this:

[mysqld.foo]
datadir = /var/lib/mysql-foo
socket = /run/mysqld/mysqld-foo.sock
...

Like every mariadb feature update this requires the data directory to be updated. With the new configuration in place run:

systemctl restart mariadb.service && mariadb-upgrade -u root -p

The next release of pacman (after pacman 5.1.3-1.3) will set the architecture to "pentium4" if you have

Architecture = auto

in your /etc/pacman.conf and your machine supports sse2 instructions.
This requires reinstallation (and if necessary a downgrade) of all installed packages, e.g. by running

pacman -Syy
pacman -Qqn | pacman -S -

Note, that this is only possible and necessary after pacman > 5.1.3-1.3 gets installed.
Also note, that it's not a good idea to stick with i686 if your machine supports sse2, as more and more packages require sse2 and will be dropped from the i686 repositories, thus.

Edit: There seems to be a flaw in the sse2 detection logic of pacman 5.1.3-1.4 - it correctly switches to pentium4 on my test vm, but not on my test real hardware (both with sse2). You can check with

pacman-conf Architecture

if it changes to pentium4 for you - and apply the above steps only if it does so.
I'm working on it ... stay tuned.

A new architecture is available, called 'pentium4'. This one is for CPUs supporting at least SSE2.

For installation and transition information head to:

Installation of pentium4 optimized packages