flake.nix

{
  description = "Nixos config flake";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    hardware.url = "github:nixos/nixos-hardware";
    treefmt-nix.url = "github:numtide/treefmt-nix";

    darwin = {
      url = "github:lnl7/nix-darwin";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    home-manager = {
      url = "github:nix-community/home-manager/master";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    catppuccin = {
      url = "github:catppuccin/nix";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.home-manager.follows = "home-manager";
    };

    firefox-addons = {
      url = "gitlab:rycee/nur-expressions?dir=pkgs/firefox-addons";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs =
    {
      self,
      nixpkgs,
      darwin,
      home-manager,
      catppuccin,
      treefmt-nix,
      ...
    }@inputs:
    let
      inherit (self) outputs;
      lib = nixpkgs.lib;
      systems = [
        "x86_64-linux"
        "aarch64-darwin"
      ];

      pkgsFor = lib.genAttrs systems (
        system:
        import nixpkgs {
          inherit system;
          config.allowUnfree = true;
        }
      );
      forEachSystem = f: lib.genAttrs systems (system: f pkgsFor.${system});

      treefmtEval = forEachSystem (pkgs: treefmt-nix.lib.evalModule pkgs ./treefmt.nix);
    in
    {
      overlays = import ./overlays { inherit inputs; };
      formatter = forEachSystem (pkgs: treefmtEval.${pkgs.system}.config.build.wrapper);

      nixosModules.default = ./modules/nixos;
      homeManagerModules.default = ./modules/homeManager;

      nixosConfigurations = {
        titan-r = lib.nixosSystem {
          system = "x86_64-linux";
          modules = [
            ./hosts/titan-r
            self.nixosModules.default
            home-manager.nixosModules.home-manager
            catppuccin.nixosModules.catppuccin
          ];
          specialArgs = { inherit inputs outputs; };
        };
      };

      darwinConfigurations = {
        Ryan-Seipps-MBP = darwin.lib.darwinSystem {
          system = "aarch64-darwin";
          pkgs = pkgsFor.aarch64-darwin;
          modules = [
            ./hosts/MacBook-Pro
            home-manager.darwinModules.home-manager
          ];
          specialArgs = { inherit inputs outputs; };
        };
      };

      checks = forEachSystem (pkgs: {
        formatting = treefmtEval.${pkgs.system}.config.build.check self;
      });
    };
}