anchor.diff:  , autoreconfHook, fetchpatch
   , git
   , texinfo
  +, buildPackages
   , qtbase ? null
   , pythonSupport ? false, swig2 ? null, python ? null
   }:
  
positive.code:   nativeBuildInputs = [ file pkgconfig gnupg autoreconfHook git texinfo ]
    ++ lib.optionals pythonSupport [ python swig2 which ncurses ];
  
    patches = [
      (fetchpatch {
        name = "fix-key-expiry.patch";
  
negative.code:   configureFlags = [
      "--enable-fixed-path=${gnupg}/bin"
      "--with-libgpg-error-prefix=${libgpgerror.dev}"
      "--with-libassuan-prefix=${libassuan.dev}"
    ] ++ lib.optional pythonSupport "--enable-languages=python";
  
    NIX_CFLAGS_COMPILE =
  