flake.nix

{
  description = "Snowfall Lib";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/release-23.11";
    # NOTE: `nix flake lock --update-input flake-utils-plus` is currently NOT
    # giving us the appropriate revision. We need a fix from a recent PR in
    # FUP, so this revision is being hard coded here for now.
    flake-utils-plus.url = "github:gytis-ivaskevicius/flake-utils-plus?rev=3542fe9126dc492e53ddd252bb0260fe035f2c0f";

    flake-compat = {
      url = "github:edolstra/flake-compat";
      flake = false;
    };
  };

  outputs = inputs: let
    core-inputs =
      inputs
      // {
        src = ./.;
      };

    # Create the library, extending the nixpkgs library and merging
    # libraries from other inputs to make them available like
    # `lib.flake-utils-plus.mkApp`.
    # Usage: mkLib { inherit inputs; src = ./.; }
    #   result: lib
    mkLib = import ./snowfall-lib core-inputs;

    # A convenience wrapper to create the library and then call `lib.mkFlake`.
    # Usage: mkFlake { inherit inputs; src = ./.; ... }
    #   result: <flake-outputs>
    mkFlake = flake-and-lib-options @ {
      inputs,
      src,
      snowfall ? {},
      ...
    }: let
      lib = mkLib {
        inherit inputs src snowfall;
      };
      flake-options = builtins.removeAttrs flake-and-lib-options ["inputs" "src"];
    in
      lib.mkFlake flake-options;
  in {
    inherit mkLib mkFlake;

    nixosModules = {
      user = ./modules/nixos/user/default.nix;
    };

    darwinModules = {
      user = ./modules/darwin/user/default.nix;
    };

    homeModules = {
      user = ./modules/home/user/default.nix;
    };

    formatter = {
      x86_64-linux = inputs.nixpkgs.legacyPackages.x86_64-linux.alejandra;
      aarch64-linux = inputs.nixpkgs.legacyPackages.aarch64-linux.alejandra;
      x86_64-darwin = inputs.nixpkgs.legacyPackages.x86_64-darwin.alejandra;
      aarch64-darwin = inputs.nixpkgs.legacyPackages.aarch64-darwin.alejandra;
    };

    snowfall = rec {
      raw-config = config;

      config = {
        root = ./.;
        src = ./.;
        namespace = "snowfall";
        lib-dir = "snowfall-lib";

        meta = {
          name = "snowfall-lib";
          title = "Snowfall Lib";
        };
      };

      internal-lib = let
        lib = mkLib {
          src = ./.;

          inputs =
            inputs
            // {
              self = {};
            };
        };
      in
        builtins.removeAttrs
        lib.snowfall
        ["internal"];
    };
  };
}