Switch default NTP client from systemd-timesyncd to ntpd-rs

[arch-hash]

describe the request

Currently, the default NTP client in archinstall when automatic NTP is enabled is systemd-timesyncd, which provides only basic time synchronization capabilities but lacks support for NTS, which enables authenticated and encrypted time synchronization operations. Fedora has switched to chrony years ago as it supports NTS, and newer Linux distros like AerynOS are using ntpd-rs. For better security and reliability of time synchronization in Arch Linux, I propose switching the default NTP client to ntpd-rs, as it supports NTS and is available in the Arch Linux repo.

[codefiles]

Arch Linux does not have a default NTP client. archinstall enables systemd-timesyncd.service if the Automatic time sync (NTP) option is enabled; the default for this option is enable.

[arch-hash]

Arch Linux does not have a default NTP client. archinstall enables systemd-timesyncd.service if the Automatic time sync (NTP) option is enabled; the default for this option is enable.

Arch Linux does not have a default NTP client. archinstall enables systemd-timesyncd.service if the Automatic time sync (NTP) option is enabled; the default for this option is enable.

Edited

[codefiles]

The default Arch time servers do not support NTS.

Link acquired from: https://wiki.archlinux.org/title/Systemd-timesyncd#Configuration

[arch-hash]

The default Arch time servers do not support NTS.

An NTP server supporting NTS is one part of the equation, having an NTP client that can actually use NTS is another. I think switching is still worth, just don't enable NTS option until upstream supports it.

[codefiles]

What if systemd-timesyncd supports NTS before the default Arch time servers?

• Network Time Security (NTS) support systemd/systemd#9481
• https://community.ntppool.org/t/nts-support-in-the-pools/2939