{
  description = "NixOS system configuration";

  inputs = {
    nixpkgs.url = "nixpkgs/nixos-24.11";
    nixpkgs-unstable.url = "nixpkgs/nixos-unstable";
    # nixpkgs-master.url = "nixpkgs";
    agenix.url = "github:ryantm/agenix";
    deploy-rs.url = "github:serokell/deploy-rs";
    disko = {
      url = "github:nix-community/disko";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    home-manager = {
      url = "github:nix-community/home-manager/release-24.11";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    firefox-gnome-theme = {
      url = "github:rafaelmardojai/firefox-gnome-theme";
      flake = false;
    };
    gitea-github-theme = {
      url = "git+ssh://git@git.vimium.com/jordan/gitea-github-theme.git?ref=main";
      flake = false;
    };
    impermanence.url = "github:nix-community/impermanence";
    kvlibadwaita = {
      url = "github:GabePoel/KvLibadwaita";
      flake = false;
    };
    nixos-hardware.url = "github:NixOS/nixos-hardware";
    nixos-mailserver = {
      url = "gitlab:simple-nixos-mailserver/nixos-mailserver";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    nixvim = {
      url = "github:nix-community/nixvim/nixos-24.11";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    pre-commit-hooks = {
      url = "github:cachix/git-hooks.nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    secrets = {
      url = "git+ssh://git@git.vimium.com/jordan/nix-secrets.git";
      flake = false;
    };
    stylix.url = "github:danth/stylix/release-24.11";
    thunderbird-gnome-theme = {
      url = "github:rafaelmardojai/thunderbird-gnome-theme";
      flake = false;
    };
  };

  outputs =
    inputs@{ self, nixpkgs, ... }:
    let
      inherit (nixpkgs) lib;

      domain = "mesh.vimium.net";
      forEachSystem = lib.genAttrs [
        "x86_64-linux"
        "aarch64-linux"
      ];
      mkDeployNode = hostName: {
        hostname = "${hostName}.${domain}";

        profiles.system = {
          user = "root";
          path =
            inputs.deploy-rs.lib.${
              self.nixosConfigurations.${hostName}.config.system.build.toplevel.system
            }.activate.nixos
              self.nixosConfigurations.${hostName};
        };
      };
    in
    {
      overlays = lib.packagesFromDirectoryRecursive {
        callPackage = path: overrides: import path;
        directory = ./overlays;
      };

      legacyPackages = forEachSystem (
        system:
        lib.packagesFromDirectoryRecursive {
          callPackage = nixpkgs.legacyPackages.${system}.callPackage;
          directory = ./pkgs;
        }
      );

      nixosConfigurations = lib.pipe ./hosts [
        builtins.readDir
        (lib.filterAttrs (name: value: value == "directory"))
        (lib.mapAttrs (
          name: value:
          lib.nixosSystem {
            specialArgs = { inherit inputs; };

            modules = [
              {
                networking = {
                  inherit domain;
                  hostName = name;
                };
              }
              ./hosts/${name}
            ];
          }
        ))
      ];

      checks =
        builtins.mapAttrs (system: deployLib: deployLib.deployChecks self.deploy) inputs.deploy-rs.lib
        // (forEachSystem (system: {
          pre-commit-check = inputs.pre-commit-hooks.lib.${system}.run {
            src = ./.;
            hooks = {
              check-case-conflicts.enable = true;
              check-executables-have-shebangs.enable = true;
              check-merge-conflicts.enable = true;
              deadnix = {
                enable = true;
                settings = {
                  noLambdaArg = true;
                };
              };
              detect-private-keys.enable = true;
              end-of-file-fixer.enable = true;
              fix-byte-order-marker.enable = true;
              mixed-line-endings.enable = true;
              nixfmt-rfc-style.enable = true;
              trim-trailing-whitespace.enable = true;
            };
          };
        }));

      formatter = forEachSystem (system: nixpkgs.legacyPackages.${system}.nixfmt-rfc-style);

      devShells = forEachSystem (system: {
        default = nixpkgs.legacyPackages.${system}.mkShell {
          inherit (self.checks.${system}.pre-commit-check) shellHook;
          buildInputs = [
            inputs.agenix.packages.${system}.agenix
            inputs.deploy-rs.packages.${system}.deploy-rs
          ] ++ self.checks.${system}.pre-commit-check.enabledPackages;
        };
      });

      deploy = {
        magicRollback = true;
        autoRollback = true;
        sshUser = "root";
        nodes = lib.genAttrs [
          "mail"
          # "pi"
          # "skycam"
          "vps1"
        ] mkDeployNode;
      };
    };
}