{
  description = "testing nix flakes for server deployment";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/release-22.11";
    nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixpkgs-unstable";

    home-manager.url = "github:nix-community/home-manager/release-22.11";
    home-manager.inputs.nixpkgs.follows = "nixpkgs";
    deploy-rs.url = "github:serokell/deploy-rs";
    deploy-rs.inputs.nixpkgs.follows = "nixpkgs";
    simple-nixos-mailserver.url =
      "gitlab:simple-nixos-mailserver/nixos-mailserver/master";
    emacs-overlay.url =
      "gitlab:nix-community/emacs-overlay?rev=d938b780a3d8072aeac0178c46121060079ff217";
    rust-overlay.url = "github:oxalica/rust-overlay";
    rust-overlay.inputs.nixpkgs.follows = "nixpkgs";
    sops-nix.url = "github:Mic92/sops-nix";
    sops-nix.inputs.nixpkgs.follows = "nixpkgs-unstable";
    sops-nix.inputs.nixpkgs-stable.follows = "nixpkgs";
    nix-gleam.url = "github:arnarg/nix-gleam";

    uplcg.url = "git+https://stuebinm.eu/git/uplcg?ref=main";
    uplcg.flake = false;
    tracktrain.url = "git+https://stuebinm.eu/git/tracktrain?ref=main";
    tracktrain.flake = false;
    blog.url = "git+ssh://cgit/~/blog";
    blog.flake = false;
    playground.url = "git+https://stuebinm.eu/git/playground";
    playground.flake = false;
    traveltext.url = "git+https://stuebinm.eu/git/traveltext?ref=main";
    traveltext.flake = false;
    showrt.url = "git+https://stuebinm.eu/git/showrt?ref=main";
    showrt.flake = false;
    almanac.url = "git+https://stuebinm.eu/git/forks/almanac";
    almanac.flake = false;
    feeds.url = "path:/home/stuebinm/org/nonpublic.nix";
    feeds.flake = false;
    isabelle-utils.url = "git+https://stuebinm.eu/git/isabelle-utils";
    isabelle-utils.flake = false;
    bahnhof-name.url = "git+https://stuebinm.eu/git/bahnhof.name";
    bahnhof-name.flake = false;

    gtfsBooks.url = "git+https://stuebinm.eu/git/gtfs-books?ref=main";
    gtfsBooks.flake = false;
    walint.url = "git+https://stuebinm.eu/git/walint?ref=playground";
    walint.flake = false;
  };

  outputs = { self, deploy-rs, sops-nix, ... }@inputs:
    let
      nixpkgs = import inputs.nixpkgs {
        system = "x86_64-linux";
        overlays = [
          inputs.rust-overlay.overlays.default
          inputs.nix-gleam.overlays.default
          self.overlays.default
        ];
      };
      mkConfig = imports: config:
        inputs.nixpkgs.lib.nixosSystem rec {
          system = "x86_64-linux";
          modules = [ config ] ++ imports;
          pkgs = nixpkgs;

          specialArgs = {
            inherit inputs system;
            craneLib = inputs.crane.lib.${system};
          };
        };
      mkDesktop = mkConfig [ ./common/desktop.nix ];
      mkServer = mkConfig [
        ./common/headless.nix
        sops-nix.nixosModules.sops
      ];
      deploy-vps = hostname: {
        inherit hostname;
        profiles.system = {
          user = "root";
          sshUser = "root";
          path = deploy-rs.lib.x86_64-linux.activate.nixos
            self.nixosConfigurations.${hostname};
        };
      };
    in {

      nixosConfigurations = {
        chaski = mkServer ./chaski/configuration.nix;
        flora = mkServer ./flora/configuration.nix;
        abbenay = mkDesktop ./abbenay/configuration.nix;
        cyberbox = mkDesktop ./cyberbox/configuration.nix;
        surltesh-echer = mkDesktop ./surltesh-echer/configuration.nix;
        ilex = mkDesktop ./ilex/configuration.nix;
      };

      deploy.nodes = {
        chaski = deploy-vps "chaski";
        flora = deploy-vps "flora";
        parsons = {
          hostname = "parsons";
          profiles.home = {
            user = "stuebinm";
            sshUser = "stuebinm";
            path = deploy-rs.lib.x86_64-linux.activate.home-manager
              self.homeConfigurations.stuebinm-minimal;
          };
        };
      };

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

      homeConfigurations = let
        home = root:
          inputs.home-manager.lib.homeManagerConfiguration rec {
            pkgs = nixpkgs;
            modules = [ root ];
            extraSpecialArgs = {
              inherit inputs;
              system = "x86_64-linux";
            };
          };
      in {
        stuebinm = home ./home/home.nix;
        stuebinm-minimal = home ./home/home-minimal.nix;
      };

      home = self.homeConfigurations.stuebinm.activationPackage;
      home-minimal = self.homeConfigurations.stuebinm-minimal.activationPackage;

      overlays.default = final: prev:
        import ./pkgs/overlay.nix { inherit inputs; } final prev;
      packages.x86_64-linux = {
        inherit (nixpkgs)
          galmon-core galmon-full glitchtip typst almanac
          kijetesantakaluotokieni showrt isabelle-utils isabat emacs29
          crs-tools travelynx;
      };

      nixosModules = { glitchtip = import ./modules/glitchtip.nix; };
    };
}