Release 23.11 (“Tapir”, 2023.11/??)

Highlights

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acme-dns, a limited DNS server to handle ACME DNS challenges easily and securely. Available as services.acme-dns.

river, A dynamic tiling wayland compositor. Available as programs.river.
sitespeed-io, a tool that can generate metrics (timings, diagnostics) for websites. Available as services.sitespeed-io.

writeTextFile now requires executable to be boolean, values like null or "" will now fail to evaluate.
The latest version of clonehero now stores custom content in ~/.clonehero. See the migration instructions. Typically, these content files would exist along side the binary, but the previous build used a wrapper script that would store them in ~/.config/unity3d/srylain Inc_/Clone Hero.
python3.pkgs.fetchPypi (and python3Packages.fetchPypi) has been deprecated in favor of top-level fetchPypi.
mariadb now defaults to mariadb_1011 instead of mariadb_106, meaning the default version was upgraded from 10.6.x to 10.11.x. See the upgrade notes for potential issues.
etcd has been updated to 3.5, you will want to read the 3.3 to 3.4 and 3.4 to 3.5 upgrade guides
himalaya has been updated to 0.8.0, which drops the native TLS support (in favor of Rustls) and add OAuth 2.0 support. See the release note for more details.
util-linux is now supported on Darwin and is no longer an alias to unixtools. Use the unixtools.util-linux package for access to the Apple variants of the utilities.
fileSystems.<name>.autoFormat now uses systemd-makefs, which does not accept formatting options. Therefore, fileSystems.<name>.formatOptions has been removed.
fileSystems.<name>.autoResize now uses systemd-growfs to resize the file system online in stage 2. This means that f2fs and ext2 can no longer be auto resized, while xfs and btrfs now can be.

The Cinnamon module now enables XDG desktop integration by default. If you are experiencing collisions related to xdg-desktop-portal-gtk you can safely remove xdg.portal.extraPortals = [ pkgs.xdg-desktop-portal-gtk ]; from your NixOS configuration.
fontconfig now defaults to using greyscale antialiasing instead of subpixel antialiasing because of a recommendation from one of the downstreams. You can change this value by configuring accordingly.
A new option was added to the virtualisation module that enables specifying explicitly named network interfaces in QEMU VMs. The existing virtualisation.vlans is still supported for cases where the name of the network interface is irrelevant.
services.nginx gained a defaultListen option at server-level with support for PROXY protocol listeners, also proxyProtocol is now exposed in services.nginx.virtualHosts.<name>.listen option. It is now possible to run PROXY listeners and non-PROXY listeners at a server-level, see #213510 for more details.