ocaml-pa_bench: add initial version (112.06.00) to the system

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

···
+{stdenv, buildOcaml, fetchurl, type_conv, pa_ounit}:
+
+buildOcaml rec {
+  name = "pa_bench";
+  version = "112.06.00";
+
+  minimumSupportedOcamlVersion = "4.00";
+
+  src = fetchurl {
+    url = "https://github.com/janestreet/pa_bench/archive/${version}.tar.gz";
+    sha256 = "e3401e37f1d3d4acb957fd46a192d0ffcefeb0bedee63bbeb26969af1d540870";
+  };
+
+  buildInputs = [ pa_ounit ];
+  propagatedBuildInputs = [ type_conv ];
+
+  meta = with stdenv.lib; {
+    homepage = https://github.com/janestreet/pa_bench;
+    description = "Syntax extension for inline benchmarks";
+    license = stdenv.lib.licenses.asl20;
+    maintainers = [ maintainers.ericbmerritt ];
+  };
+}

pkgs/top-level/all-packages.nix

···
 
     pa_ounit = callPackage ../development/ocaml-modules/pa_ounit { };
 
+    pa_bench = callPackage ../development/ocaml-modules/pa_bench { };
+
     pprint = callPackage ../development/ocaml-modules/pprint { };
 
     pycaml = callPackage ../development/ocaml-modules/pycaml { };