diff --git a/bin/ring.ml b/bin/ring.ml
index 1017674..7aeabe7 100644
--- a/bin/ring.ml
+++ b/bin/ring.ml
@@ -5,22 +5,4 @@ module Resolver = Gem.Resolver.Make (struct
   let target = Path.rel [ "_www" ]
 end)
 
-let final_message _cache = Eff.log ~level:`Debug "ring.muhokama done"
-
-let generate_opml chain =
-  Action.write_static_file Resolver.Target.ring_opml
-    (let open Task in
-     Pipeline.track_files
-       (Resolver.Source.members :: Resolver.Source.common_deps)
-     >>> const chain
-     >>> Gem.Chain.to_opml)
-
-let process_all () =
-  let open Eff in
-  let* cache, chain = Gem.Action.init_chain (module Resolver) in
-  return cache
-  >>= generate_opml chain
-  >>= Action.store_cache Resolver.Target.cache
-  >>= final_message
-
-let () = Yocaml_eio.run ~level:`Debug process_all
+let () = Yocaml_eio.run ~level:`Debug (Gem.Action.process_all (module Resolver))
diff --git a/lib/action.ml b/lib/action.ml
index 0d17fe1..74be0fa 100644
--- a/lib/action.ml
+++ b/lib/action.ml
@@ -20,3 +20,20 @@ let init_chain (module R : Sigs.RESOLVER) =
       cache
   in
   (cache, Chain.init ~chain ~members)
+
+let final_message _cache = Yocaml.Eff.log ~level:`Debug "ring.muhokama done"
+
+let generate_opml (module R : Sigs.RESOLVER) chain =
+  Yocaml.Action.write_static_file R.Target.ring_opml
+    (let open Yocaml.Task in
+     Yocaml.Pipeline.track_files (R.Source.members :: R.Source.common_deps)
+     >>> const chain
+     >>> Chain.to_opml)
+
+let process_all (module R : Sigs.RESOLVER) () =
+  let open Yocaml.Eff in
+  let* cache, chain = init_chain (module R) in
+  return cache
+  >>= generate_opml (module R) chain
+  >>= Yocaml.Action.store_cache R.Target.cache
+  >>= final_message
diff --git a/lib/action.mli b/lib/action.mli
new file mode 100644
index 0000000..d36b3ba
--- /dev/null
+++ b/lib/action.mli
@@ -0,0 +1,4 @@
+(** All the actions used to build the ring. *)
+
+val process_all : (module Sigs.RESOLVER) -> unit -> unit Yocaml.Eff.t
+(** Process all action in order to produce [ring.muhokama]. *)