DS flash carts typically support the EZ-Flash 3-in-1 and allow you to write GBA ROMs to them. Sadly, the 3-in-1 has been discontinued so you'd need another flash cart that lets you flash and boot a ROM like it was a retail game.
Glad to see this one's finally public! Probably gonna be the last publicly released distro barring a miracle find or a re-creation of the distros that have the same generation algorithm as this, 10ANNIV and Aura Mew. Especially since it's looking like PCNY won't be able to be used at home due to...