systemd from system:systemd:stable project

For Arch Linux, edit /etc/pacman.conf and add the following (note that the order of repositories in pacman.conf is important, since pacman always downloads the first found package):

[system_systemd_stable_Arch]
Server = https://download.opensuse.org/repositories/system:/systemd:/stable/Arch/$arch

Then run the following as root

key=$(curl -fsSL https://download.opensuse.org/repositories/system:systemd:stable/Arch/$(uname -m)/system_systemd_stable_Arch.key)
fingerprint=$(gpg --quiet --with-colons --import-options show-only --import --fingerprint <<< "${key}" | awk -F: '$1 == "fpr" { print $10 }')

pacman-key --init
pacman-key --add - <<< "${key}"
pacman-key --lsign-key "${fingerprint}"

pacman -Sy system_systemd_stable_Arch/systemd

For Debian Testing run the following:

Keep in mind that the owner of the key may distribute updates, packages and repositories that your system will trust (more information).

echo 'deb http://download.opensuse.org/repositories/system:/systemd:/stable/Debian_Testing/ /' | sudo tee /etc/apt/sources.list.d/system:systemd:stable.list
curl -fsSL https://download.opensuse.org/repositories/system:systemd:stable/Debian_Testing/Release.key | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/system_systemd_stable.gpg > /dev/null
sudo apt update
sudo apt install systemd

For Debian 13 run the following:

Keep in mind that the owner of the key may distribute updates, packages and repositories that your system will trust (more information).

echo 'deb http://download.opensuse.org/repositories/system:/systemd:/stable/Debian_13/ /' | sudo tee /etc/apt/sources.list.d/system:systemd:stable.list
curl -fsSL https://download.opensuse.org/repositories/system:systemd:stable/Debian_13/Release.key | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/system_systemd_stable.gpg > /dev/null
sudo apt update
sudo apt install systemd

For Fedora Rawhide run the following as root:

dnf config-manager addrepo --from-repofile=https://download.opensuse.org/repositories/system:systemd:stable/Fedora_Rawhide/system:systemd:stable.repo
dnf install systemd

For Fedora 43 run the following as root:

dnf config-manager addrepo --from-repofile=https://download.opensuse.org/repositories/system:systemd:stable/Fedora_43/system:systemd:stable.repo
dnf install systemd

For Fedora 42 run the following as root:

dnf config-manager addrepo --from-repofile=https://download.opensuse.org/repositories/system:systemd:stable/Fedora_42/system:systemd:stable.repo
dnf install systemd

For Ubuntu 24.04 run the following:

Keep in mind that the owner of the key may distribute updates, packages and repositories that your system will trust (more information).

echo 'deb http://download.opensuse.org/repositories/system:/systemd:/stable/Ubuntu_24.04/ /' | sudo tee /etc/apt/sources.list.d/system:systemd:stable.list
curl -fsSL https://download.opensuse.org/repositories/system:systemd:stable/Ubuntu_24.04/Release.key | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/system_systemd_stable.gpg > /dev/null
sudo apt update
sudo apt install systemd