[Palomides]

I'm not very familiar with nix, how well does it do with cross compiling? is anyone actually using it for yocto sorts of domains?

[sollniss]

You can generally remotely build for any supported architecture[1]. The build process will be painfully slow though if you have cache misses.

[1] https://search.nixos.org/options?channel=26.05&query=boot.bi...

[throwawayqqq11]

Nitpick: binfmt.emulatedSystems is not true cross compilation. It sets up a nixos to enable emulated native compilation. After painful tinkering, i prefer this way too. When i recall correctly, for cross compilation you'd have to use nixpkgs flags.

[actionfromafar]

At some point it's a matter of perspective. If the emulated system is fast, it feels the same as "true" cross compilation. In the end it's a bunch of bits and bytes which produces some other bits and bytes when we poke it. If it goes fast, it's good. If it goes slow, it's painful.

[cbrake]

Is this similar to QEMU user mode emulation?

[nine_k]

We do Nix-based cross-compiling for non-embedded software (ARM vs x64). I'd say it works mostly transparently.

[rendaw]

Nixos can cross build os images for Le Potato with device tree stuff: https://hub.libre.computer/t/nixos-for-aml-s905x-cc-le-potat...