> The “build hook” is the mechanism by which the daemon asks an external > program whether it can build a derivation for some system.
> Our (guix scripts offload) is such a program; it replies positively if > there’s a machine that matches the target system. > What I was suggesting is to have another build hook that would reply > positively as long as the target system can be emulated by QEMU. So I thought about this some more. guix offload uses guix build to build a derivation which again uses a different nix-daemon to build it. I'm not sure that guix offload can help us here. If it is possible to build a derivation using only qemu-arm instead of qemu-system-arm - which I'm still not convinced - I think it's the nix-daemon that would have to support this. In build.cc it sets up a chroot and then executes the builder. I think it's that builder that needs to be run with qemu-arm. But I don't think it's going to be as easy as that =) Does this make sense?
