No optional args for context

src/action.ml

@@ -888,7 +888,7 @@ and exec_list l ~ectx ~dir ~env ~stdout_to ~stderr_to =
     exec t ~ectx ~dir ~env ~stdout_to ~stderr_to >>= fun () ->
     exec_list rest ~ectx ~dir ~env ~stdout_to ~stderr_to
 
-let exec ~targets ?context t =
+let exec ~targets ~context t =
   let env =
     match (context : Context.t option) with
     | None -> Env.initial ()

src/action.mli

@@ -112,7 +112,7 @@ module Unexpanded : sig
     -> Partial.t
 end
 
-val exec : targets:Path.Set.t -> ?context:Context.t -> t -> unit Fiber.t
+val exec : targets:Path.Set.t -> context:Context.t option -> t -> unit Fiber.t
 
 (* Return a sandboxed version of an action *)
 val sandbox

src/build_interpret.ml

@@ -191,7 +191,7 @@ module Rule = struct
     }
 
   let make ?(sandbox=false) ?(mode=Jbuild.Rule.Mode.Not_a_rule_stanza)
-        ?context ?(locks=[]) ?loc build =
+        ~context ?(locks=[]) ?loc build =
     let targets = targets build in
     let dir =
       match targets with

src/build_interpret.mli

@@ -25,7 +25,7 @@ module Rule : sig
   val make
     :  ?sandbox:bool
     -> ?mode:Jbuild.Rule.Mode.t
-    -> ?context:Context.t
+    -> context:Context.t option
     -> ?locks:Path.t list
     -> ?loc:Loc.t
     -> (unit, Action.t) Build.t

src/build_system.ml

@@ -736,7 +736,7 @@ let rec compile_rule t ?(copy_source=false) pre_rule =
       in
       make_local_dirs t (Action.chdirs action);
       with_locks locks ~f:(fun () ->
-        Action.exec ?context ~targets action) >>| fun () ->
+        Action.exec ~context ~targets action) >>| fun () ->
       Option.iter sandbox_dir ~f:Path.rm_rf;
       (* All went well, these targets are no longer pending *)
       pending_targets := Pset.diff !pending_targets targets;
@@ -783,7 +783,7 @@ and setup_copy_rules t ~ctx_dir ~non_target_source_files =
 
        This allows to keep generated files in tarballs. Maybe we
        should allow it on a case-by-case basis though. *)
-    compile_rule t (Pre_rule.make build) ~copy_source:true)
+    compile_rule t (Pre_rule.make build ~context:None) ~copy_source:true)
 
 and load_dir   t ~dir = ignore (load_dir_and_get_targets t ~dir : Pset.t)
 and targets_of t ~dir =         load_dir_and_get_targets t ~dir
@@ -860,13 +860,14 @@ and load_dir_step2_exn t ~dir ~collector ~lazy_generators =
                   ~suffix:("-" ^ Digest.to_hex stamp)
               in
               let rule =
-                Pre_rule.make ~locks
+                Pre_rule.make ~locks ~context:None
                   (Build.progn [ action; Build.create_file path ])
               in
               (rule :: rules, Pset.add deps path))
         in
         let path = Path.extend_basename base_path ~suffix:Alias0.suffix in
         (Pre_rule.make
+           ~context:None
            (Build.path_set deps >>>
             Build.action ~targets:[path]
               (Redirect (Stdout,
@@ -1074,6 +1075,7 @@ let stamp_file_for_files_of t ~dir ~ext =
     compile_rule t
       (let open Build.O in
        Pre_rule.make
+         ~context:None
          (Build.paths files >>>
           Build.action ~targets:[stamp_file]
             (Action.with_stdout_to stamp_file

src/super_context.ml

@@ -209,13 +209,13 @@ let add_rule t ?sandbox ?mode ?locks ?loc build =
   let build = Build.O.(>>>) build t.chdir in
   Build_system.add_rule t.build_system
     (Build_interpret.Rule.make ?sandbox ?mode ?locks ?loc
-       ~context:t.context build)
+       ~context:(Some t.context) build)
 
 let add_rule_get_targets t ?sandbox ?mode ?locks ?loc build =
   let build = Build.O.(>>>) build t.chdir in
   let rule =
     Build_interpret.Rule.make ?sandbox ?mode ?locks ?loc
-      ~context:t.context build
+      ~context:(Some t.context) build
   in
   Build_system.add_rule t.build_system rule;
   List.map rule.targets ~f:Build_interpret.Target.path