{
  description = "Homelab v5 Nixos Server Configurations";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-24.05";
    nixpkgs-unstable.url = "github:nixos/nixpkgs?ref=nixos-unstable";

    sops-nix = {
      url = "github:Mic92/sops-nix";
      inputs.nixpkgs.follows = "nixpkgs-unstable";
      inputs.nixpkgs-stable.follows = "nixpkgs";
    };
    backup-helper = {
      url = "git+https://git.t-juice.club/torjus/backup-helper?ref=master";
      inputs.nixpkgs.follows = "nixpkgs-unstable";
    };
  };

  outputs =
    {
      self,
      nixpkgs,
      nixpkgs-unstable,
      sops-nix,
      backup-helper,
      ...
    }@inputs:
    let
      system = "x86_64-linux";
      overlay-unstable = final: prev: {
        unstable = import nixpkgs-unstable {
          inherit system;
          config.allowUnfree = true;
        };
      };
    in
    {
      nixosConfigurations = {
        ns1 = nixpkgs.lib.nixosSystem {
          inherit system;
          specialArgs = {
            inherit inputs self sops-nix;
          };
          modules = [
            (
              { config, pkgs, ... }:
              {
                nixpkgs.overlays = [ overlay-unstable ];
              }
            )
            ./hosts/ns1
            sops-nix.nixosModules.sops
          ];
        };
        ns2 = nixpkgs.lib.nixosSystem {
          inherit system;
          specialArgs = {
            inherit inputs self sops-nix;
          };
          modules = [
            (
              { config, pkgs, ... }:
              {
                nixpkgs.overlays = [ overlay-unstable ];
              }
            )
            ./hosts/ns2
            sops-nix.nixosModules.sops
          ];
        };
        ns3 = nixpkgs.lib.nixosSystem {
          inherit system;
          specialArgs = {
            inherit inputs self sops-nix;
          };
          modules = [
            (
              { config, pkgs, ... }:
              {
                nixpkgs.overlays = [ overlay-unstable ];
              }
            )
            ./hosts/ns3
            sops-nix.nixosModules.sops
          ];
        };
        ns4 = nixpkgs.lib.nixosSystem {
          inherit system;
          specialArgs = {
            inherit inputs self sops-nix;
          };
          modules = [
            (
              { config, pkgs, ... }:
              {
                nixpkgs.overlays = [ overlay-unstable ];
              }
            )
            ./hosts/ns4
            sops-nix.nixosModules.sops
          ];
        };
        nixos-test1 = nixpkgs.lib.nixosSystem {
          inherit system;
          specialArgs = {
            inherit inputs self sops-nix;
          };
          modules = [
            (
              { config, pkgs, ... }:
              {
                nixpkgs.overlays = [ overlay-unstable ];
              }
            )
            ./hosts/nixos-test1
            sops-nix.nixosModules.sops
            backup-helper.nixosModules.backup-helper
          ];
        };
        ha1 = nixpkgs.lib.nixosSystem {
          inherit system;
          specialArgs = {
            inherit inputs self sops-nix;
          };
          modules = [
            (
              { config, pkgs, ... }:
              {
                nixpkgs.overlays = [ overlay-unstable ];
              }
            )
            ./hosts/ha1
            sops-nix.nixosModules.sops
            backup-helper.nixosModules.backup-helper
          ];
        };
        inc1 = nixpkgs.lib.nixosSystem {
          inherit system;
          specialArgs = {
            inherit inputs self sops-nix;
          };
          modules = [
            (
              { config, pkgs, ... }:
              {
                nixpkgs.overlays = [ overlay-unstable ];
              }
            )
            ./hosts/inc1
            sops-nix.nixosModules.sops
            # backup-helper.nixosModules.backup-helper
          ];
        };
        inc2 = nixpkgs.lib.nixosSystem {
          inherit system;
          specialArgs = {
            inherit inputs self sops-nix;
          };
          modules = [
            (
              { config, pkgs, ... }:
              {
                nixpkgs.overlays = [ overlay-unstable ];
              }
            )
            ./hosts/inc2
            sops-nix.nixosModules.sops
            # backup-helper.nixosModules.backup-helper
          ];
        };
        template1 = nixpkgs.lib.nixosSystem {
          inherit system;
          specialArgs = {
            inherit inputs self sops-nix;
          };
          modules = [
            (
              { config, pkgs, ... }:
              {
                nixpkgs.overlays = [ overlay-unstable ];
              }
            )
            ./hosts/template
            sops-nix.nixosModules.sops
          ];
        };
        http-proxy = nixpkgs.lib.nixosSystem {
          inherit system;
          specialArgs = {
            inherit inputs self sops-nix;
          };
          modules = [
            (
              { config, pkgs, ... }:
              {
                nixpkgs.overlays = [ overlay-unstable ];
              }
            )
            ./hosts/http-proxy
            sops-nix.nixosModules.sops
          ];
        };
        ca = nixpkgs.lib.nixosSystem {
          inherit system;
          specialArgs = {
            inherit inputs self sops-nix;
          };
          modules = [
            (
              { config, pkgs, ... }:
              {
                nixpkgs.overlays = [ overlay-unstable ];
              }
            )
            ./hosts/ca
            sops-nix.nixosModules.sops
          ];
        };
      };
    };
}