Make Process.run take Env.t directly

src/action.ml

@@ -716,7 +716,7 @@ let exec_run_direct ~ectx ~dir ~env_extra ~stdout_to ~stderr_to prog args =
      invalid_prefix ("_build/install/" ^ target.name);
   end;
   let env = Env.extend ectx.env ~vars:env_extra in
-  Process.run Strict ~dir:(Path.to_string dir) ~env:(Env.to_unix env)
+  Process.run Strict ~dir:(Path.to_string dir) ~env
     ~stdout_to ~stderr_to
     ~purpose:ectx.purpose
     (Path.reach_for_running ~from:dir prog) args

src/context.ml

@@ -110,8 +110,7 @@ let opam_config_var ~env ~cache var =
     match Bin.opam with
     | None -> Fiber.return None
     | Some fn ->
-      Process.run_capture (Accept All) (Path.to_string fn)
-        ~env:(Env.to_unix env)
+      Process.run_capture (Accept All) (Path.to_string fn) ~env
         ["config"; "var"; var]
       >>| function
       | Ok s ->
@@ -146,7 +145,7 @@ let create ~(kind : Kind.t) ~path ~env_extra ~name ~merlin
       match Sys.getenv "OCAMLFIND_CONF" with
       | s -> Fiber.return (Path.absolute s)
       | exception Not_found ->
-        Process.run_capture_line ~env:(Env.to_unix env) Strict
+        Process.run_capture_line ~env Strict
           (Path.to_string fn) ["printconf"; "conf"]
         >>| Path.absolute)
   in
@@ -208,9 +207,7 @@ let create ~(kind : Kind.t) ~path ~env_extra ~name ~merlin
             | None -> args
             | Some s -> "-toolchain" :: s :: args
           in
-          Process.run_capture_lines
-            ~env:(Env.to_unix env)
-            Strict (Path.to_string fn) args
+          Process.run_capture_lines ~env Strict (Path.to_string fn) args
           >>| List.map ~f:Path.absolute
         | None ->
           (* If there no ocamlfind in the PATH, check if we have opam
@@ -233,7 +230,7 @@ let create ~(kind : Kind.t) ~path ~env_extra ~name ~merlin
     Fiber.fork_and_join
       findlib_path
       (fun () ->
-         Process.run_capture_lines ~env:(Env.to_unix env) Strict
+         Process.run_capture_lines ~env Strict
            (Path.to_string ocamlc) ["-config"]
          >>| fun lines ->
          let open Result.O in
@@ -409,7 +406,7 @@ let install_ocaml_libdir t =
     (* If ocamlfind is present, it has precedence over everything else. *)
     match which t "ocamlfind" with
     | Some fn ->
-      (Process.run_capture_line ~env:(Env.to_unix t.env) Strict
+      (Process.run_capture_line ~env:t.env Strict
          (Path.to_string fn) ["printconf"; "destdir"]
        >>| fun s ->
        Some (Path.absolute s))

src/jbuild_load.ml

@@ -149,7 +149,7 @@ end
          ]}
       *)
       Process.run Strict ~dir:(Path.to_string dir)
-        ~env:(Env.to_unix context.env)
+        ~env:context.env
         (Path.to_string context.ocaml)
         args
       >>= fun () ->

src/process.ml

@@ -243,7 +243,7 @@ let run_internal ?dir ?(stdout_to=Terminal) ?(stderr_to=Terminal) ?env ~purpose
       Unix.create_process prog argv
         Unix.stdin stdout stderr
     | Some env ->
-      Unix.create_process_env prog argv env
+      Unix.create_process_env prog argv (Env.to_unix env)
         Unix.stdin stdout stderr
   in
   let pid =

src/process.mli

@@ -41,7 +41,7 @@ val run
   :  ?dir:string
   -> ?stdout_to:std_output_to
   -> ?stderr_to:std_output_to
-  -> ?env:string array
+  -> ?env:Env.t
   -> ?purpose:purpose
   -> (unit, 'a) failure_mode
   -> string
@@ -51,7 +51,7 @@ val run
 (** Run a command and capture its output *)
 val run_capture
   :  ?dir:string
-  -> ?env:string array
+  -> ?env:Env.t
   -> ?purpose:purpose
   -> (string, 'a) failure_mode
   -> string
@@ -59,7 +59,7 @@ val run_capture
   -> 'a Fiber.t
 val run_capture_line
   :  ?dir:string
-  -> ?env:string array
+  -> ?env:Env.t
   -> ?purpose:purpose
   -> (string, 'a) failure_mode
   -> string
@@ -67,7 +67,7 @@ val run_capture_line
   -> 'a Fiber.t
 val run_capture_lines
   :  ?dir:string
-  -> ?env:string array
+  -> ?env:Env.t
   -> ?purpose:purpose
   -> (string list, 'a) failure_mode
   -> string