{
  description = "PatOS is a minimal, immutable Linux distribution specialized for the Patagia Platform.";

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

  outputs =
    {
      self,
      flake-utils,
      nixpkgs,
    }:
    flake-utils.lib.eachDefaultSystem (
      system:
      let
        pkgs = import nixpkgs { inherit system; };
        patosPkgs = self.packages.${system};
        version = "0.0.1";
      in
      {
        packages = {
          default = patosPkgs.image;
          image = pkgs.callPackage ./pkgs/image {
            inherit patosPkgs;
            inherit version;
          };
          rootfs = pkgs.callPackage ./pkgs/rootfs {
            inherit patosPkgs;
            inherit version;
          };
          initrd = pkgs.callPackage ./pkgs/rootfs/mkinitrd.nix {
            inherit patosPkgs;
            inherit version;
          };
          kernel = pkgs.callPackage ./pkgs/kernel { };
          glibc = pkgs.callPackage ./pkgs/glibc { };
          kexec = pkgs.callPackage ./pkgs/kexec-tools { };
          lvm2 = pkgs.callPackage ./pkgs/lvm2 { };
          tpm2-tools = pkgs.callPackage ./pkgs/tpm2-tools { inherit patosPkgs; };
          tpm2-tss = pkgs.callPackage ./pkgs/tpm2-tss { };
          systemd = pkgs.callPackage ./pkgs/systemd { };
          dbus-broker = pkgs.callPackage ./pkgs/dbus-broker { };

          qemu-uefi-tpm = pkgs.callPackage ./utils/qemu-uefi-tpm.nix { };
        };

        checks = {
          simple-test = pkgs.runCommand "simple-test" { } ''
            ${self.packages.${system}.default}/bin/my-program
            touch $out
          '';
        };

        formatter = pkgs.nixpkgs-fmt;

        devShells.default = pkgs.mkShell {
          buildInputs = with pkgs; [
            just
            nixd
            nixfmt-rfc-style
            patosPkgs.qemu-uefi-tpm
          ];
        };

      }
    );
}