Known Issues

Contents

Known Issues#

kexec hangs on aarch64 VMs (UTM/QEMU on Apple Silicon)#

When re-deploying an already installed machine, nixos-anywhere uses kexec to boot into the NixOS installer. On aarch64 VMs under UTM/QEMU with Apple Hypervisor.framework, kexec may cause the VM to hang. Possible causes include missing kernel config, PSCI/CPU enable method mismatches, or HVF not properly handing off hypervisor state during kexec.

Workaround: Boot the VM from the NixOS installer ISO before re-deploying and skip the kexec phase:

nix run github:nix-community/nixos-anywhere -- \
  --flake '.#demo-single-node' \
  --phases disko,install,reboot \
  --target-host root@192.0.2.10

When using ansible, set nixos_anywhere_extra_flags in your inventory accordingly.