{ pkgs, ... }:
{
  environment.systemPackages = with pkgs; [
    # yubikey packages
    gnupg
    yubikey-personalization
    yubikey-personalization-gui
    yubico-pam
    yubioath-flutter
    yubikey-manager
    yubikey-manager-qt
    yubikey-touch-detector
    yubico-piv-tool
    cfssl
    pcsctools
    pcscliteWithPolkit.out

    # ledger packages
    ledger-live-desktop

    # pinentry
    dbus
    swaylock-effects
    syncthingtray-minimal

    # secure boot
    sbctl

    libsForQt5.qt5.qtwayland

    # nix package database
    nix-index
    nixos-generators

    # commit hooks
    pre-commit

    # proc info
    acpi

    # better make for general tasks
    just

    # keyboards
    qmk
    vial
    via

    # theme related
    adwaita-icon-theme

    # kde-connect
    xdg-desktop-portal
    xdg-desktop-portal-wlr

    # bluetooth
    bluez

    # lsp-related -------------------------------
    # nix
    # latex
    # texlab
    ghostscript_headless
    # wireguard
    wireguard-tools
    # rust
    # rust-analyzer
    # clippy
    # rustfmt
    # go
    # go
    # gopls
    # nix
    nixd
    # zig
    zig
    zls
    # cpp
    # clang-tools
    # + cuda
    # cudatoolkit
    # ansible
    # ansible-lint
    ansible-language-server
    # molecule
    #lsp-bridge / python
    # gcc
    # gdb
    # (python3.withPackages (ps: with ps; [ jupyter ipython pyqt5 epc orjson sexpdata six setuptools paramiko numpy pandas scipy matplotlib requests debugpy flake8 gnureadline python-lsp-server ]))
    # (python3.withPackages(ps: with ps; [ jupyter ipython pyqt5 numpy pandas scipy matplotlib requests debugpy flake8 gnureadline python-lsp-server]))
    # --------------------------------------------

    # (stdenv.mkDerivation {
    #   name = "oama";

    #   src = pkgs.fetchurl {
    #     name = "oama";
    #     url = "https://github.com/pdobsan/oama/releases/download/0.13.1/oama-0.13.1-Linux-x86_64-static.tgz";
    #     sha256 = "sha256-OTdCObVfnMPhgZxVtZqehgUXtKT1iyqozdkPIV+i3Gc=";
    #   };

    #   phases = [
    #     "unpackPhase"
    #   ];

    #   unpackPhase = ''
    #     mkdir -p $out/bin
    #     tar xvf $src -C $out/
    #     mv $out/oama-0.13.1-Linux-x86_64-static/oama $out/bin/
    #   '';

    # })

  ];
}