{ pkgs, lib, ... }:
let  # bash script to let dbus know about important env variables and
  # propagate them to relevent services run at the end of sway config
  # see
  # https://github.com/emersion/xdg-desktop-portal-wlr/wiki/"It-doesn't-work"-Troubleshooting-Checklist
  # note: this is pretty much the same as  /etc/sway/config.d/nixos.conf but also restarts  
  # some user services to make sure they have the correct environment variables
  dbus-sway-environment = pkgs.writeTextFile {
    name = "dbus-sway-environment";
    destination = "/bin/dbus-sway-environment";
    executable = true;

    text = ''
      dbus-update-activation-environment --systemd WAYLAND_DISPLAY XDG_CURRENT_DESKTOP=sway
      systemctl --user stop pipewire pipewire-media-session xdg-desktop-portal xdg-desktop-portal-wlr
      systemctl --user start pipewire pipewire-media-session xdg-desktop-portal xdg-desktop-portal-wlr
    '';
  };

  # currently, there is some friction between sway and gtk:
  # https://github.com/swaywm/sway/wiki/GTK-3-settings-on-Wayland
  # the suggested way to set gtk settings is with gsettings
  # for gsettings to work, we need to tell it where the schemas are
  # using the XDG_DATA_DIR environment variable
  # run at the end of sway config
  configure-gtk = pkgs.writeTextFile {
    name = "configure-gtk";
    destination = "/bin/configure-gtk";
    executable = true;
    text = let
      # TODO: figure out why these bindings exist or where they're used
      schema = pkgs.gsettings-desktop-schemas;
      datadir = "${schema}/share/gsettings-schemas/${schema.name}";
    in ''
6      gnome_schema=org.gnome.desktop.interface
       gsettings set $gnome_schema gtk-theme 'Dracula'
    '';
  };
in
{

  # List packages installed in system profile. To search, run:
  # $ nix search wget
  environment.systemPackages = with pkgs; [
    neovim
    appimage-run
    wget
    kitty
    w3m
    fishPlugins.fzf-fish
    fzf
    qemu
    OVMF

    # Sway stuff
    wdisplays
    mako
    bemenu
    wl-clipboard
    slurp
    grim
    swayidle
    swaylock
    gnome3.adwaita-icon-theme
    dracula-theme
    glib
    xdg-utils
    wayland
    configure-gtk
    dbus-sway-environment
    dbus
  ];

  # Fix dynamically linked libraries for unpackaged binaries
  programs.nix-ld = {
    enable = true;
    libraries = with pkgs; [
      # Add missing dynamic libraries for unpackaged programs HERE
      # NOT in environment.systemPackages
      zlib
    ];
  };


  # Logseq uses an ancient version of Electron, so we enable that
  nixpkgs.config.permittedInsecurePackages = [ "electron-25.9.0" ];

  # Whitelist some unfree packages
  nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [
    "discord"
    "spotify"
    "obsidian"
    "tailscale"
    "google-chrome"
  ];
}