diff --git a/src/opamWrapper.ml b/src/opamWrapper.ml
index 49eb52f..f0dfe9d 100644
--- a/src/opamWrapper.ml
+++ b/src/opamWrapper.ml
@@ -25,7 +25,7 @@ let exists_switch_at_dir dir =
   let switch_config_file = OpamPath.Switch.switch_config root switch in
   OpamFile.exists switch_config_file
 
-let get_satysfi_opam_registry switch =
+let get_satysfi_opam_registry ~outf switch =
   let get_reg_from_root switch =
     let root = OpamStateConfig.(!r.root_dir) in
     let switch_config_file = OpamPath.Switch.switch_config root switch in
@@ -34,19 +34,24 @@ let get_satysfi_opam_registry switch =
   in
   let get_reg () =
     OpamGlobalState.with_ `Lock_none @@ fun gt ->
-    let global_switch = OpamFile.Config.switch gt.config in
+    let global_switch =
+      OpamFile.Config.switch gt.config
+      (* OpamStateConfig.get_switch_opt () *)
+    in
     match switch, global_switch with
     | Some switch, _ ->
+      Format.fprintf outf "Switch specified: %s@." (OpamSwitch.to_string switch);
       get_reg_from_root switch
     | None, Some switch ->
+      Format.fprintf outf "Global switch found: %s@." (OpamSwitch.to_string switch);
       get_reg_from_root switch
     | None, None ->
       failwith "get_reg: No switch is specified"
   in
   Result.try_with get_reg
 
-let get_satysfi_opam_registry_exc switch =
-  get_satysfi_opam_registry switch
+let get_satysfi_opam_registry_exc ~outf switch =
+  get_satysfi_opam_registry ~outf switch
   |> Result.ok_exn
 
 let dune_cache_envs = [
@@ -84,7 +89,7 @@ let opam_switch_arg opam_switch =
 
 let read_opam_environment ~outf ?opam_switch env =
   let satysfi_opam_registry () =
-    get_satysfi_opam_registry opam_switch
+    get_satysfi_opam_registry ~outf opam_switch
     |> Result.map ~f:OpamFilename.Dir.to_string
   in
 
diff --git a/test/testcases/command_lockdown_save__invalid_opam_response.expected b/test/testcases/command_lockdown_save__invalid_opam_response.expected
index 734fcdc..dcdd03b 100644
--- a/test/testcases/command_lockdown_save__invalid_opam_response.expected
+++ b/test/testcases/command_lockdown_save__invalid_opam_response.expected
@@ -121,10 +121,10 @@ diff -Nr @@empty_dir@@/satysfi-grcnum.opam @@temp_dir@@/pkg/satysfi-grcnum.opam
 ------------------------------------------------------------
 Command invoked:
 opam list -i --color=never --columns name,repository,installed-version --separator=, --recursive --required-by satysfi-fonts-theano,satysfi-grcnum
-Installing packages                       +
-------------------------------------------+------------------
-Gathering OPAM package information...     +
-Exception:                                +
+Installing packages
+------------------------------------------------------------
+Gathering OPAM package information...
+Exception:
 (Failure
   "BUG: Unrecognizable package information from OPAM: \"***,invalid,response,!!!\"")
 ------------------------------------------------------------
diff --git a/test/testlib/testLib.ml b/test/testlib/testLib.ml
index 5889ebb..4901d52 100644
--- a/test/testlib/testLib.ml
+++ b/test/testlib/testLib.ml
@@ -131,8 +131,10 @@ let test_install ?(replacements=[]) ?(post_dump_dirs=default_post_dump_dirs) set
       post_dump_dirs ~dest_dir ~temp_dir
     in
     let opam_prefix = Unix.open_process_in "opam var prefix" |> input_line (* Assume a path does not contain line breaks*) in
+    let working_dir = Unix.getcwd () in
     let replacements =
       [ opam_prefix, "@@opam_prefix@@";
+        working_dir, "@@working_dir@@";
         dest_dir, "@@dest_dir@@";
         temp_dir, "@@temp_dir@@";
         Unix.getenv "HOME", "@@home_dir@@";