{
  description = "Your new nix config";

  inputs = {
    # Nixpkgs
    nixpkgs.url = "github:nixos/nixpkgs/nixos-25.05";

    # Secrets
    sops-nix = {
      url = "github:Mic92/sops-nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    # disko
    disko.url = "github:nix-community/disko";
    disko.inputs.nixpkgs.follows = "nixpkgs";

    # theme
    catppuccin.url = "github:catppuccin/nix";

    # Home manager
    home-manager.url = "github:nix-community/home-manager/release-25.05";
    home-manager.inputs.nixpkgs.follows = "nixpkgs";

    # neovim
    nixvim.url = "git+https://codeberg.org/landervdb/nixvim.git";

    # mailserver
    nixos-mailserver = {
      url = "gitlab:simple-nixos-mailserver/nixos-mailserver/nixos-25.05";
      inputs = {
        nixpkgs.follows = "nixpkgs";
      };
    };

    # headplane
    headplane = {
      url = "github:igor-ramazanov/headplane";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    # emacs overlay
    emacs-overlay = {
      url = "github:nix-community/emacs-overlay";
    };

    # tidalcycles
    tidalcycles = {
      url = "github:mitchmindtree/tidalcycles.nix";
    };
  };

  outputs =
    {
      self,
      nixpkgs,
      emacs-overlay,
      tidalcycles,
      ...
    }@inputs:
    let
      inherit (self) outputs;
    in
    {
      nixosConfigurations = {
        # Workstations
        wodan = nixpkgs.lib.nixosSystem {
          specialArgs = { inherit inputs outputs; };
          modules = [
            {
              nixpkgs.overlays = [
                emacs-overlay.overlays.default
                tidalcycles.overlays.default
                (_: prev: {
                  tailscale = prev.tailscale.overrideAttrs (old: {
                    checkFlags = builtins.map (
                      flag:
                      if prev.lib.hasPrefix "-skip=" flag then
                        flag + "|^TestGetList$|^TestIgnoreLocallyBoundPorts$|^TestPoller$"
                      else
                        flag
                    ) old.checkFlags;
                  });
                })
              ];
            }
            ./hosts/wodan
          ];
        };
        widar = nixpkgs.lib.nixosSystem {
          specialArgs = { inherit inputs outputs; };
          modules = [
            ./hosts/widar
          ];
        };

        # servers
        db-01 = nixpkgs.lib.nixosSystem {
          system = "aarch64-linux";
          specialArgs = { inherit inputs outputs; };
          modules = [
            ./hosts/db-01
          ];
        };
        hosting-01 = nixpkgs.lib.nixosSystem {
          system = "aarch64-linux";
          specialArgs = { inherit inputs outputs; };
          modules = [
            ./hosts/hosting-01
          ];
        };
        hosting-02 = nixpkgs.lib.nixosSystem {
          system = "aarch64-linux";
          specialArgs = { inherit inputs outputs; };
          modules = [
            ./hosts/hosting-02
          ];
        };
        mail-01 = nixpkgs.lib.nixosSystem {
          system = "aarch64-linux";
          specialArgs = { inherit inputs outputs; };
          modules = [
            ./hosts/mail-01
          ];
        };
      };
    };
}