anchor.diff:  { stdenv
   , fetchFromGitHub
  +, fetchpatch
   , substituteAll
   , writeScript
   , pantheon
  
positive.code:     sha256 = "0n1m41aapr58rb1ffvfkjq6c6w3f0ynjzzhja50s4di98p4m7y0q";
    };
  
    nativeBuildInputs = [
      meson
      ninja
    ];
  
    mesonFlags = [
  
negative.code: , writeText
  , meson
  , ninja
  , pkg-config
  }:
  
  let
  