Run a custom core image on Home assistant OS

Hi! While trying to develop a bit on the home assistant core, i started wondering how i can run a custom home assistant core image on Home assistant OS.Currently, i can’t find anything regarding this in the developer docs. Does anyone know how i would go about doing this?

Were you ever able to figure this out? I’m in a similar situation. Would like to use the OS and Supervisor, but am working on a custom version of Core that I would like to run on a Raspberry Pi.

For anyone in the future looking for the same answer, I got a custom version of HA Core & Frontend running on a PI by using the Home Assistant Supervised Installer: GitHub - home-assistant/supervised-installer: Installer for a generic Linux system

This does NOT include the OS, and you have to install a version of Debian.

What it does allow is for you to modify which Docker images are used (for your custom core/supervisor), but allows HA to run Supervised, so you have access to things like Addons: Google Drive backup, Zigbee2MQTT, ESPHome and more.