nixpkgs/pkgs/development/libraries/tk/default.nix

{ stdenv, fetchurl, tcl, x11 }:

stdenv.mkDerivation {
  name = "tk-8.5.7";
  
  src = fetchurl {
    url = "mirror://sourceforge/tcl/tk8.5.7-src.tar.gz";
    sha256 = "0c5gsy3nlwl0wn9swz4k4v7phy7nzjl317gca1jykgf4jz9nwdnr";
  };
  
  postInstall = ''
    ln -s $out/bin/wish* $out/bin/wish
  '';
  
  configureFlags = "--with-tcl=${tcl}/lib";
  
  preConfigure = "cd unix";

  buildInputs = [tcl x11];
  
  inherit tcl;

  passthru = {
    libPrefix = "tk8.5";
  };
}