{ nixpkgsUnstableInput, nixpkgsDevInput }:

final: prev:
let
  nixpkgsUnstable = (import nixpkgsUnstableInput {
    system = prev.system;
    config.allowUnfree = true;
  }).pkgs;
  nixpkgsDev = (import nixpkgsDevInput {
    system = prev.system;
    config.allowUnfree = true;
  }).pkgs;
in
{
  # keep sources this first
  # sources = prev.callPackage (import ./_sources/generated.nix) { };
  customEmacs = prev.callPackage (import ./emacs) { };
  amule = prev.callPackage (import ./amule) { };
  digikam = nixpkgsUnstable.digikam;
  cura = nixpkgsUnstable.cura;
  qutebrowser = import ./qutebrowser { pkgs = prev; };
  #firefox-unwrapped = nixpkgsUnstable.firefox-unwrapped;
  xdg-desktop-portal = nixpkgsUnstable.xdg-desktop-portal;
  xdg-desktop-portal-gtk = nixpkgsUnstable.xdg-desktop-portal-gtk;
  vscode = nixpkgsUnstable.vscode;
  geoclue2 = nixpkgsUnstable.geoclue2;
  gnome = nixpkgsUnstable.gnome;
  umoria = nixpkgsDev.umoria;
  droidcam = prev.callPackage (import ./droidcam) { };
  v4l2loopback-dc = prev.callPackage (import ./v4l2loopback-dc) { kernel = prev.linux; };
  slack = import ./slack { pkgs = prev; };
  google-chrome = import ./google-chrome { pkgs = prev; };
  # then, call packages with `final.callPackage`
}