melodypond/flake.nix

{
  description = "my project description";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = inputs@{self, nixpkgs, flake-utils, ...}:
  flake-utils.lib.eachDefaultSystem (system:
  let
    pkgs = import nixpkgs {
      inherit system;
    };
    crossPkgs = pkgs.pkgsCross.aarch64-multiplatform;
  in
  {
    apps.default = {
      type = "app";
      program = self.outputs.packages.${system}.vmscript + "/bin/vmscript";
    };
    packages.vmscript = pkgs.writeScriptBin "vmscript" ''
        #!${pkgs.runtimeShell} -e
        img=./sd-card.img
        cp -b ${self.outputs.image}/sd-image/orange.img $img
        chmod 640 $img
        truncate -s %2G $img
        ${pkgs.qemu}/bin/qemu-system-aarch64 \
          -machine raspi3b \
          -kernel "${crossPkgs.ubootRaspberryPi3_64bit}/u-boot.bin" \
          -cpu max \
          -m 1G \
          -smp 4 \
          -drive file="$img",format=raw \
          -nographic \
          -serial null \
          -serial mon:stdio
      '';
    }) // {
      nixosConfigurations.orange = nixpkgs.lib.nixosSystem {
        modules = [
          "${nixpkgs}/nixos/modules/installer/sd-card/sd-image-aarch64.nix"
          {
            boot.kernelParams = [ "console=ttyS1,115200n8" ];
            networking.hostName = "orange";
            system.stateVersion = "23.05";
            nixpkgs.hostPlatform.system = "aarch64-linux";
            sdImage = {
              imageName = "orange.img";
              compressImage = false;
            };
          }
        ];
      };
      image = self.outputs.nixosConfigurations.orange.config.system.build.sdImage;
    };
}