Cannot install Board in Arduino on aarch64 linux

Attempting to install boards (wio, lorawan, …) into arduino from seeedduino source

Seeed boards file:

http://arduino.esp8266.com/stable/package_esp8266com_index.json,https://dl.espressif.com/dl/package_esp32_index.json,https://files.seeedstudio.com/arduino/package_seeeduino_boards_index.json

NOTE: PROBLEM IS OBVIOUS…
There is no clause for selecting a file for bossac from any source for aarch64/arm64. There is a clear reference for arm-linux-gnueabihf (32 bit arm hard-float) which would execute on aarch64. Also, simple download of bossa-cli and building on aarch64 succeeds but the installer does not refer to external dependencies, so installation of the seeed boards for this file still fails as indicated.

SOLUTION:
Add a clause for aarch64 in the json to either grab the 32 bit hard-float file or build and upload an aarch64 resource for arduino and then update the json to refer to it.

ERROR:

Caused by: java.lang.Exception: Tool bossac is not available for your operating system.
	at cc.arduino.contributions.packages.ContributionInstaller.install(ContributionInstaller.java:88)
	at cc.arduino.contributions.packages.ui.ContributionManagerUI.lambda$onInstallPressed$2(ContributionManagerUI.java:172)

Information:

# uname -a 
Linux n2 4.9.277-117 #1 SMP PREEMPT Sat Aug 7 21:43:06 UTC 2021 aarch64 aarch64 aarch64 GNU/Linux


# cat /etc/issue
Ubuntu 20.04.3 LTS \n \l

ARDUINO Version: 1.8.15 (latest snap)