{
  inputs = {
    nixpkgs.url = "nixpkgs/nixos-unstable";
    nixpkgs-stable.url = "nixpkgs/nixos-23.05";

    home-manager = {
      url = "github:nix-community/home-manager/master";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    impermanence.url = "github:nix-community/impermanence";
    deploy-rs.url = "github:serokell/deploy-rs";
    nixos-hardware.url = "github:NixOS/nixos-hardware/master";
  };

  outputs =
    { self
    , nixpkgs
    , nixpkgs-stable
    , nixos-hardware
    , home-manager
    , impermanence
    , deploy-rs
    }@inputs:
    let
      system = "x86_64-linux";
      pkgs = import nixpkgs { inherit system; };
      deployPkgs = import nixpkgs {
        inherit system;
        overlays = [
          deploy-rs.overlay
          (self: super: {
            deploy-rs = {
              inherit (pkgs) deploy-rs;
              lib = deploy-rs.lib;
            };
          })
        ];
      };
    in

    {
      nixosConfigurations = {
        trantor = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          specialArgs = {
            # unstablePkgs = nixpkgs-unstable.legacyPackages."x86_64-linux";
            stablePkgs = nixpkgs-stable.legacyPackages."x86_64-linux";
            impermanence = impermanence;
          };

          modules = [
            ./hosts/trantor
            home-manager.nixosModules.home-manager
            impermanence.nixosModules.impermanence
          ];
        };

        capibara = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          specialArgs = {
            # unstablePkgs = nixpkgs-unstable.legacyPackages."x86_64-linux";
            stablePkgs = nixpkgs-stable.legacyPackages."x86_64-linux";
            impermanence = impermanence;
          };

          modules = [
            ./hosts/capibara
            nixos-hardware.nixosModules.lenovo-thinkpad-x230
            home-manager.nixosModules.home-manager
            impermanence.nixosModules.impermanence
          ];
        };

        lb = nixpkgs-stable.lib.nixosSystem {
          system = "aarch64-linux";
          specialArgs = { impermanence = impermanence; };
          modules = [
            ./hosts/lb
            impermanence.nixosModules.impermanence
          ];
        };
      };
      deploy.nodes = {

        capibara = {
          hostname = "capibara";
          profiles = {
            system = {
              sshUser = "rilla";
              user = "root";
              sudo = "doas -u";
              path = deployPkgs.deploy-rs.lib.x86_64-linux.activate.nixos self.nixosConfigurations.capibara;
              autoRollback = true;
              remoteBuild = false;
            };
          };
        };

        lb = {
          hostname = "lb";
          profiles = {
            system = {
              sshUser = "rilla";
              user = "root";
              sudo = "doas -u";
              path = deployPkgs.deploy-rs.lib.aarch64-linux.activate.nixos self.nixosConfigurations.lb;
              autoRollback = true;
              # remoteBuild = false;
              remoteBuild = true;
            };
          };
        };

      };

      checks = builtins.mapAttrs (system: deployLib: deployLib.deployChecks self.deploy) deployPkgs.deploy-rs.lib;
    };
}