{ config, ... }:
let
  cursor = {
    name = "phinger-cursors-light";
    size = 24;
  };
in
{
  flake.modules.nixos.theme =
    { pkgs, ... }:
    {
      home-manager.sharedModules = [ config.flake.modules.homeManager.theme ];
      environment.systemPackages = [ pkgs.phinger-cursors ];
    };

  flake.modules.homeManager.theme =
    { pkgs, ... }:
    let
      version = "unstable-2025-10-23";
      src = pkgs.fetchFromGitHub {
        owner = "Fausto-Korpsvart";
        repo = "Kanagawa-GKT-Theme";
        rev = "55ca4ba249eba21f861b9866b71ab41bb8930318";
        hash = "sha256-UdMoMx2DoovcxSp/zBZ3PRv/Qpj+prd0uPm1gmdak2E=";
      };
      kanagawaGtkTheme = pkgs.stdenvNoCC.mkDerivation {
        pname = "kanagawa-gtk-theme";
        inherit src version;

        nativeBuildInputs = [ pkgs.sassc ];

        installPhase = ''
          runHook preInstall

          mkdir -p "$out/share/themes"
          bash ./themes/install.sh \
            --dest "$out/share/themes" \
            --name Kanagawa \
            --color dark

          rm -r "$out/share/themes/Kanagawa-Dark/gtk-2.0"

          runHook postInstall
        '';
      };
    in
    {
      home.pointerCursor = cursor // {
        enable = true;
        package = pkgs.phinger-cursors;
        dotIcons.enable = false;
        gtk.enable = true;
      };

      gtk = {
        enable = true;
        theme = {
          name = "Kanagawa-Dark";
          package = kanagawaGtkTheme;
        };
        gtk4.theme = null;
        iconTheme = {
          name = "Kanagawa";
          package = pkgs.kanagawa-icon-theme.overrideAttrs (_: {
            inherit src version;
          });
        };
      };

      qt = {
        enable = true;
        platformTheme.name = "gtk3";
      };

      xdg.systemDirs.data = [
        "${pkgs.gsettings-desktop-schemas}/share/gsettings-schemas/${pkgs.gsettings-desktop-schemas.name}"
        "${pkgs.gtk3}/share/gsettings-schemas/${pkgs.gtk3.name}"
      ];
    };
}