anchor.diff:  in
   python3Packages.buildPythonApplication rec {
     pname = "meson";
  -  version = "0.53.2";
  +  version = "0.52.1";
   
     src = python3Packages.fetchPypi {
       inherit pname version;
  -    sha256 = "Po+DDzMYQ5fC6wtlHsUCrbY97LKJeL3ISzVY1xKEwh8=";
  +    sha256 = "02fnrk1fjf3yiix0ak0m9vgbpl4h97fafii5pmw7phmvnlv9fyan";
     };
   
     postFixup = ''
  
positive.code: { lib
  , python3Packages
  , stdenv
  , writeTextDir
  , substituteAll
  
negative.code:     (substituteAll {
        src = ./fix-rpath.patch;
        inherit (builtins) storeDir;
      })
  
      # Fix detecting incorrect compiler in the store path hash.
      # https://github.com/NixOS/nixpkgs/issues/73417#issuecomment-554077964
      # https://github.com/mesonbuild/meson/pull/6185
      (fetchpatch {
        url = "https://github.com/mesonbuild/meson/commit/972ede1d14fdf17fe5bb8fb99be220f9395c2392.patch";
        sha256 = "19bfsylhpy0b2xv3ks8ac9x3q6vvvyj1wjcy971v9d5f1455xhbb";
      })
    ];
  
  