{cabal}:

cabal.mkDerivation (self : {
  pname = "utf8-string";
  version = "0.3.4";
  sha256 = "1gd5b5q5jw70mg0z8jjgqigc0wmvnc7fx2k3yfdsz20b9wsjfw7r";
  meta = {
    description = "A UTF8 layer for IO and Strings";
  };
})