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# Copyright 2026 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

{
  # via overlay (Flake.)
  # https://github.com/jeslie0/mkElmDerivation
  mkElmDerivation,
  lib,
  closurecompiler,
  elmPackages,
  zig,
  custom-elements-compiler,
}:
mkElmDerivation {
  name = "watch-strap-template-builder";

  nativeBuildInputs = [
    custom-elements-compiler

    # > Delightful language for reliable webapps
    # https://elm-lang.org/
    elmPackages.elm

    # > Tool for making JavaScript download and run faster
    # https://developers.google.com/closure/compiler/
    closurecompiler

    # > General-purpose programming language and toolchain for maintaining robust, optimal,
    # > and reusable software
    # https://ziglang.org/
    zig
  ];

  src =
    with lib.fileset;
    toSource {
      root = ./.;
      fileset = unions [
        ./src
        ./build.zig
        ./build
        ./elm.json
        ./LICENSES
        ./vendor
      ];
    };

  buildPhase = ''
    zig build "-j$NIX_BUILD_CORES" -Doptimize=ReleaseFast -Dcustom-elements-compiler=${lib.getExe custom-elements-compiler} --prefix $out
  '';
}