let
  pkgs = import (fetchTarball "https://github.com/NixOS/nixpkgs/tarball/nixos-25.11") {};
  ftgl-tecgraf = pkgs.callPackage ./IUP_Nix/ftgl-tecgraf.nix {};
  im = pkgs.callPackage ./IUP_Nix/im.nix { inherit builtins; };
  cd = pkgs.callPackage ./IUP_Nix/cd.nix { inherit builtins ftgl-tecgraf im; };
  iup = pkgs.callPackage ./IUP_Nix/iup.nix { inherit builtins ftgl-tecgraf im cd; };
in
pkgs.mkShellNoCC {
  packages = with pkgs; [
    iup
    fftw
    libpng
    gtk2
    libGLU
    ftgl-tecgraf
    
    gcc
    ccache
    pkg-config
    cloc
    valgrind
    gdb
    cpulimit
    perf
    indent
  ];
}