{
  nixConfig.extra-experimental-features = ["pipe-operators"];

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

    nix-darwin.url = "github:nix-darwin/nix-darwin/master";
    nix-darwin.inputs.nixpkgs.follows = "nixpkgs";

    nix-homebrew.url = "github:zhaofengli/nix-homebrew";

    homebrew-core = {
      url = "github:homebrew/homebrew-core";
      flake = false;
    };
    homebrew-cask = {
      url = "github:homebrew/homebrew-cask";
      flake = false;
    };

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

    agenix.url = "github:ryantm/agenix";
    agenix.inputs.nixpkgs.follows = "nixpkgs";

    # tranquil.url = "git+https://tangled.org/tranquil.farm/tranquil-pds";
    # tranquil.inputs.nixpkgs.follows = "nixpkgs";

    tangled = {
      url = "git+https://tangled.org/tangled.org/core";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.actor-typeahead-src.follows = "";
      inputs.fenix.follows = "";
      inputs.htmx-src.follows = "";
      inputs.htmx-ws-src.follows = "";
      inputs.ibm-plex-mono-src.follows = "";
      inputs.inter-fonts-src.follows = "";
      inputs.lucide-src.follows = "";
      inputs.mermaid-src.follows = "";
    };
  };

  outputs = inputs: {
    darwinConfigurations."qualia" = inputs.nix-darwin.lib.darwinSystem {
      modules = [
        inputs.nix-homebrew.darwinModules.nix-homebrew
        ./hosts/qualia
      ];
      specialArgs = {inherit inputs;};
    };

    nixosConfigurations."etrokwal" = inputs.nixpkgs.lib.nixosSystem {
      modules = [
        inputs.disko.nixosModules.disko
        inputs.agenix.nixosModules.default
        # inputs.tranquil.nixosModules.default
        inputs.tangled.nixosModules.spindle
        ./hosts/etrokwal
      ];
      specialArgs = {inherit inputs;};
    };

    formatter = inputs.nixpkgs.lib.genAttrs
    inputs.nixpkgs.lib.systems.flakeExposed
    (system: inputs.nixpkgs.legacyPackages.${system}.alejandra);
  };
}