mkosi from system:systemd:ultraviolet project
Select Your Operating System
Add repository and install manually
For Fedora Rawhide run the following as root:
dnf config-manager addrepo --from-repofile=https://download.opensuse.org/repositories/system:systemd:ultraviolet/Fedora_Rawhide/system:systemd:ultraviolet.repo dnf install mkosi
For Fedora 42 run the following as root:
dnf config-manager addrepo --from-repofile=https://download.opensuse.org/repositories/system:systemd:ultraviolet/Fedora_42/system:systemd:ultraviolet.repo dnf install mkosi