anchor.diff:  
   buildDunePackage rec {
     pname = "git";
  -	version = "2.1.0";
  +	version = "2.1.2";
   
  -	src = fetchFromGitHub {
  -		owner = "mirage";
  -		repo = "ocaml-git";
  -		rev = version;
  -		sha256 = "0v55zkwgml6i5hp0kzynbi58z6j15k3qgzg06b3h8pdbv5fwd1jp";
  +	src = fetchurl {
  +		url = "https://github.com/mirage/ocaml-git/releases/download/${version}/git-${version}.tbz";
  +		sha256 = "0yyclsh255k7pvc2fcsdi8k2fcrr0by2nz6g3sqnwlimjyp7mz5j";
   	};
   
   	propagatedBuildInputs = [ angstrom astring cstruct decompress digestif encore duff fmt fpath hex ke logs lru ocaml_lwt ocamlgraph ocplib-endian uri rresult ];
  
positive.code: { lib, fetchFromGitHub, buildDunePackage
  , alcotest, git, mtime, nocrypto
  , angstrom, astring, cstruct, decompress, digestif, encore, duff, fmt
  , fpath, hex, ke, logs, lru, ocaml_lwt, ocamlgraph, ocplib-endian, uri, rresult
  
negative.code: 		description = "Git format and protocol in pure OCaml";
  		license = lib.licenses.isc;
  		maintainers = [ lib.maintainers.vbgl ];
  		homepage = "https://github.com/mirage/ocaml-git";
  	};
  }
  