ocamlPackages.cryptokit: switch to fetchFromGitHub

pkgs/development/ocaml-modules/cryptokit/default.nix

@@ -1,14 +1,16 @@
-{ lib, buildDunePackage, fetchurl, zlib, dune-configurator, zarith, ncurses }:
+{ lib, buildDunePackage, fetchFromGitHub, zlib, dune-configurator, zarith, ncurses }:
 
-buildDunePackage {
+buildDunePackage rec {
   pname = "cryptokit";
   version = "1.16.1";
 
   useDune2 = true;
 
-  src = fetchurl {
-    url = "https://github.com/xavierleroy/cryptokit/archive/release1161.tar.gz";
-    sha256 = "0kzqkk451m69nqi5qiwak0rd0rp5vzi613gcngsiig7dyxwka61c";
+  src = fetchFromGitHub {
+    owner = "xavierleroy";
+    repo = "cryptokit";
+    rev = "release${lib.replaceStrings ["."] [""] version}";
+    sha256 = "sha256-eDIzi16Al/mXCNos/lVqjZWCtdP9SllXnRfm4GBWMfA=";
   };
 
   # dont do autotools configuration, but do trigger findlib's preConfigure hook