Revert "ocaml-modules: fix naming: "_" -> "-""

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

@@ -0,0 +1,25 @@
+{stdenv, buildOcaml, fetchurl, core_kernel,
+ bin_prot, fieldslib, pa_ounit, pa_test,
+ sexplib, herelib}:
+
+buildOcaml rec {
+  name = "async_kernel";
+  version = "112.24.00";
+
+  minimumSupportedOcamlVersion = "4.02";
+
+  src = fetchurl {
+    url = "https://github.com/janestreet/async_kernel/archive/${version}.tar.gz";
+    sha256 = "95caf4249b55c5a6b38da56e314845e9ea9a0876eedd4cf0ddcb6c8dd660c6a0";
+  };
+
+  buildInputs = [ pa_test pa_ounit ];
+  propagatedBuildInputs = [ core_kernel bin_prot fieldslib herelib sexplib ];
+
+  meta = with stdenv.lib; {
+    homepage = https://github.com/janestreet/async_kernel;
+    description = "Jane Street Capital's asynchronous execution library (core) ";
+    license = licenses.asl20;
+    maintainers = [ maintainers.ericbmerritt ];
+  };
+}