anchor.diff:  
     meta = {
       description = "A TOML parsing and manipulation library for OCaml";
  +    changelog = "https://github.com/dmbaturin/otoml/raw/${version}/CHANGELOG.md";
       license = lib.licenses.mit;
       maintainers = [ lib.maintainers.vbgl ];
       inherit (src.meta) homepage;
  
positive.code:     owner = "dmbaturin";
      repo = pname;
      rev = version;
      sha256 = "sha256-2WGuq4ZLbLvfG6WZ3iimiSMqMYHCuruZc1EttZ/5rBE=";
    };
  
    strictDeps = true;
  
negative.code: 
  buildDunePackage rec {
    pname = "otoml";
    version = "1.0.2";
  
    minimalOCamlVersion = "4.08";
  
  