anchor.diff:    }."${compilerName}";
   
     # ar with lto support
  -  ar = {
  +  ar = stdenv.cc.bintools.targetPrefix + {
       "clang" = "llvm-ar";
       "gcc" = "gcc-ar";
       "unknown" = "ar";
  
positive.code:     sha256 = "0yrz7n0wls8g8w7ja934icwxmng3sxh70x87qmzc9c9cb1wyd989";
    };
  
    nativeBuildInputs = [
      meson
      ninja
      ncurses
      scdoc
      tllist
      wayland-protocols
      pkg-config
    ] ++ lib.optionals (compilerName == "clang") [
      stdenv.cc.cc.libllvm.out
    ];
  
    buildInputs = [
      fontconfig
      freetype
      pixman
  
negative.code: , scdoc
  , tllist
  , wayland-protocols
  , wayland-scanner
  , pkg-config
  , utf8proc
  , allowPgo ? true
  