This is a Nix-based packaging for linux-3ds, a port of Linux for the 3DS family of devices.
For the time being, and for the foreseeable future, this is only mean to build a toy system (kernel and initramfs) as a demo. This is a neat showcase of how one can leverage Nixpkgs and Nix in parts to build an embedded style system.
This has no real use.
Generally speaking, you probably wouldn't. Additionally, this does not list the
steps required for hacking your 3DS. I'm assuming
luma is the payload used
and already installed.
If you want to, still, first build
sdcard-filesystem, which is the
partial skeleton structure to copy to your SD card,
$ env -i nix-build -A sdcard-filesystem
And somehow copy this to your SD card. (Read the tips section.)
Then, when the 3DS boots, holds
[START]. This will show the Luma3DS
chainloader interface. Select
firm_linux_loader and launch it.
The display will glitch out a bit for a few seconds, then the top panel will show the console logs, and the bottom panel a basic on-screen-keyboard.
[L] + [SELECT] then press
Then you can choose Reboot and hold
./ftp.sh <ip address:port> to copy to your 3DS, assuming it is
running an FTP server.