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

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

@@ -0,0 +1,23 @@
+{stdenv, buildOcaml, fetchurl, type_conv, sexplib, pa_ounit}:
+
+buildOcaml rec {
+  name = "custom_printf";
+  version = "112.24.00";
+
+  minimumSupportedOcamlVersion = "4.02";
+
+  src = fetchurl {
+    url = "https://github.com/janestreet/custom_printf/archive/${version}.tar.gz";
+    sha256 = "dad3aface92c53e8fbcc12cc9358c4767cb1cb09857d4819a10ed98eccaca8f9";
+  };
+
+  buildInputs = [ pa_ounit ];
+  propagatedBuildInputs = [ type_conv sexplib ];
+
+  meta = with stdenv.lib; {
+    homepage = https://github.com/janestreet/custom_printf;
+    description = "Syntax extension for printf format strings";
+    license = licenses.asl20;
+    maintainers = [ maintainers.ericbmerritt ];
+  };
+}