NixOSConfig/flake.nix

{
  description = "NixOS Machine Configurations by manuth";

  inputs = {
    nixpkgs.url = "nixpkgs/38c01297e7ec11f7b9e3f2cae7d6fcec6cc767ec";
    flake-utils.url = "github:numtide/flake-utils?ref=b1d9ab70662946ef0850d488da1c9019f3a9752a";
    sops-nix.url = "github:Mic92/sops-nix?ref=f1b0adc27265274e3b0c9b872a8f476a098679bd";
  };

  outputs = { self, nixpkgs, flake-utils, sops-nix }: (
    flake-utils.lib.eachDefaultSystem (
      system:
      let
        pkgs = import nixpkgs {
          inherit system;
          config = {};

          overlays = [
            sops-nix.overlays.default
          ];
        };
      in {
        devShells.default = pkgs.mkShellNoCC (
          with pkgs;
          {
            sopsPGPKeyDirs = [ 
              "${toString ./.}/keys/hosts"
              "${toString ./.}/keys/users"
            ];

            packages = [
              nixos-rebuild
              sops
              sops-import-keys-hook
              ssh-to-age
              ssh-to-pgp
            ];

            nativeBuildInputs = [
              sops-import-keys-hook
            ];
          });
      }
    ) // {
      nixosConfigurations =
        let
          default = { pkgs, ... }: {
            dualBoot = false;
            timeZone = null;
            keyMap = "us";
            keyboardLayout = "us";
            localeSettings = { };
            users = { };
          };
          systems = {
            nixos.config = { ... }: {
            };
          };
        in
          builtins.mapAttrs (
            name: { system ? "x86_64-linux", config }: nixpkgs.lib.nixosSystem {
              inherit system;

              modules = [
                (
                  { pkgs, ... }@args: {
                    config._module.args = {
                      machineConfig = (default args) //
                        (config args) // {
                          inherit name;
                        };
                    };
                  })
                sops-nix.nixosModules.sops
                ./lib/configuration.nix
                (
                  let
                    configCandidate = ./lib/machines/${name}.nix;
                    
                    machineConfigPath =
                      if builtins.pathExists configCandidate
                      then
                        configCandidate
                      else
                        ./lib/hardware/base.nix;
                  in
                    machineConfigPath)
              ];
            })
            systems;
    });
}