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# Copyright 2025 Shota FUJI
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at https://mozilla.org/MPL/2.0/.
#
# SPDX-License-Identifier: MPL-2.0

{
  inputs = {
    nixpkgs = {
      url = "github:nixos/nixpkgs/nixpkgs-unstable";
    };
  };

  outputs =
    { nixpkgs, ... }:
    let
      systems = [
        "x86_64-linux"
        "aarch64-linux"
        "x86_64-darwin"
        "aarch64-darwin"
      ];

      forEachSystems =
        f:
        nixpkgs.lib.genAttrs systems (
          system:
          f {
            inherit system;
            pkgs = nixpkgs.legacyPackages.${system};
          }
        );
    in
    rec {
      packages = forEachSystems (
        { pkgs, ... }:
        rec {
          default = gtk;
          gtk = pkgs.callPackage ./gtk/default.nix { };
        }
      );

      formatter = forEachSystems (
        { pkgs, ... }:
        pkgs.buildFHSEnv {
          name = "devshell-fhs-fish";
          targetPkgs =
            pkgs: with pkgs; [
              zig_0_16

              # > Code formatting platform written in Rust
              # https://dprint.dev/
              dprint

              # > Source Code Beautifier for C, C++, C#, ObjectiveC, D, Java, Pawn and VALA
              # https://uncrustify.sourceforge.net/
              uncrustify

              # > Official formatter for Nix code
              # https://github.com/NixOS/nixfmt
              nixfmt
            ];
          runScript = "dprint fmt";
        }
      );

      devShells = forEachSystems (
        { pkgs, system }:
        {
          default = pkgs.mkShell {
            packages =
              with pkgs;
              [
                # > Zig LSP implementation + Zig Language Server
                # https://github.com/zigtools/zls
                zls_0_16

                # > Tool for compliance with the REUSE Initiative recommendations
                # https://github.com/fsfe/reuse-tool
                # https://reuse.software/
                reuse
              ]
              ++ packages.${system}.gtk.nativeBuildInputs
              ++ packages.${system}.gtk.buildInputs;
          };
        }
      );
    };
}