riscv64 is now an official Debian architecture
Debian 13 “Trixie” has been aiming for official RISC-V support and indeed it will happen: RISC-V has now been promoted to an official Debian CPU architecture.
While long available as a Debian port, as of this weekend RISC-V 64-bit is now considered an official Debian architecture. riscv64 is now an official Debian architecture