nixos-riscv/overlay.nix

final: prev:

# Changes to packages from nixpkgs

{
  opensbi = prev.opensbi.overrideAttrs (old: {
    makeFlags = old.makeFlags ++ [
        # Build OpenSBI without compressed instructions
        "PLATFORM_RISCV_ISA=rv64gv"
        # Check with: riscv64-unknown-elf-objdump -d -M no-aliases rotate
    ];
  });
}