diff --git a/packages/js_of_ocaml-compiler/js_of_ocaml-compiler.6.0.1+ox/files/js_of_ocaml-ocaml_version-ppx.patch b/packages/js_of_ocaml-compiler/js_of_ocaml-compiler.6.0.1+ox/files/js_of_ocaml-ocaml_version-ppx.patch
deleted file mode 100644
index d82b9d1fb..000000000
--- a/packages/js_of_ocaml-compiler/js_of_ocaml-compiler.6.0.1+ox/files/js_of_ocaml-ocaml_version-ppx.patch
+++ /dev/null
@@ -1,24 +0,0 @@
---- a/toplevel/lib/jsooTop.ml
-+++ b/toplevel/lib/jsooTop.ml
-@@ -65,6 +65,7 @@
-     p := !p + len'';
-     len''
-
-+[%%if ocaml_version < (4, 14, 0)]
- let use ffp content =
-   let fname, oc =
-     Filename.open_temp_file ~mode:[ Open_binary ] "jsoo_toplevel" "fake_stdin"
-@@ -78,10 +79,11 @@
-   with e ->
-     Sys.remove fname;
-     raise e
--[@@if ocaml_version < (4, 14, 0)]
-+[%%endif]
-
-+[%%if ocaml_version >= (4, 14, 0)]
- let use ffp content = Toploop.use_silently ffp (String content)
--[@@if ocaml_version >= (4, 14, 0)]
-+[%%endif]
-
- let execute printval ?pp_code ?highlight_location pp_answer s =
-   let lb = Lexing.from_function (refill_lexbuf s (ref 0) pp_code) in
diff --git a/packages/js_of_ocaml-compiler/js_of_ocaml-compiler.6.0.1+ox/opam b/packages/js_of_ocaml-compiler/js_of_ocaml-compiler.6.0.1+ox/opam
index 470c23e4f..263aa3ea7 100644
--- a/packages/js_of_ocaml-compiler/js_of_ocaml-compiler.6.0.1+ox/opam
+++ b/packages/js_of_ocaml-compiler/js_of_ocaml-compiler.6.0.1+ox/opam
@@ -52,7 +52,6 @@ patches: [
   "js_of_ocaml-add-unboxed-and-float-block.patch"
   "js_of_ocaml-ident-is_global.patch"
   "js_of_ocaml-remove-float-externals.patch"
-  "js_of_ocaml-ocaml_version-ppx.patch"
   "js_of_ocaml-test-diffs-caused-by-build-differences.patch"
   "js_of_ocaml-fix-build_fs.patch"
   "js_of_ocaml-iarray-primitives.patch"
@@ -121,10 +120,6 @@ extra-files: [
     "js_of_ocaml-remove-float-externals.patch"
     "sha256=e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
   ]
-  [
-    "js_of_ocaml-ocaml_version-ppx.patch"
-    "sha256=df6bcb6da8aa3dfd6bd0a178679987d41c400ec1803f4a66659cfc822d1b280f"
-  ]
   [
     "js_of_ocaml-test-diffs-caused-by-build-differences.patch"
     "sha256=e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
diff --git a/packages/js_of_ocaml-ppx/js_of_ocaml-ppx.6.0.1+ox/files/js_of_ocaml-ocaml_version-ppx.patch b/packages/js_of_ocaml-ppx/js_of_ocaml-ppx.6.0.1+ox/files/js_of_ocaml-ocaml_version-ppx.patch
deleted file mode 100644
index d82b9d1fb..000000000
--- a/packages/js_of_ocaml-ppx/js_of_ocaml-ppx.6.0.1+ox/files/js_of_ocaml-ocaml_version-ppx.patch
+++ /dev/null
@@ -1,24 +0,0 @@
---- a/toplevel/lib/jsooTop.ml
-+++ b/toplevel/lib/jsooTop.ml
-@@ -65,6 +65,7 @@
-     p := !p + len'';
-     len''
-
-+[%%if ocaml_version < (4, 14, 0)]
- let use ffp content =
-   let fname, oc =
-     Filename.open_temp_file ~mode:[ Open_binary ] "jsoo_toplevel" "fake_stdin"
-@@ -78,10 +79,11 @@
-   with e ->
-     Sys.remove fname;
-     raise e
--[@@if ocaml_version < (4, 14, 0)]
-+[%%endif]
-
-+[%%if ocaml_version >= (4, 14, 0)]
- let use ffp content = Toploop.use_silently ffp (String content)
--[@@if ocaml_version >= (4, 14, 0)]
-+[%%endif]
-
- let execute printval ?pp_code ?highlight_location pp_answer s =
-   let lb = Lexing.from_function (refill_lexbuf s (ref 0) pp_code) in
diff --git a/packages/js_of_ocaml-ppx/js_of_ocaml-ppx.6.0.1+ox/opam b/packages/js_of_ocaml-ppx/js_of_ocaml-ppx.6.0.1+ox/opam
index 8321966d4..fa7fd320a 100644
--- a/packages/js_of_ocaml-ppx/js_of_ocaml-ppx.6.0.1+ox/opam
+++ b/packages/js_of_ocaml-ppx/js_of_ocaml-ppx.6.0.1+ox/opam
@@ -42,7 +42,6 @@ patches: [
   "js_of_ocaml-add-unboxed-and-float-block.patch"
   "js_of_ocaml-ident-is_global.patch"
   "js_of_ocaml-remove-float-externals.patch"
-  "js_of_ocaml-ocaml_version-ppx.patch"
   "js_of_ocaml-test-diffs-caused-by-build-differences.patch"
   "js_of_ocaml-fix-build_fs.patch"
   "js_of_ocaml-iarray-primitives.patch"
@@ -111,10 +110,6 @@ extra-files: [
     "js_of_ocaml-remove-float-externals.patch"
     "sha256=e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
   ]
-  [
-    "js_of_ocaml-ocaml_version-ppx.patch"
-    "sha256=df6bcb6da8aa3dfd6bd0a178679987d41c400ec1803f4a66659cfc822d1b280f"
-  ]
   [
     "js_of_ocaml-test-diffs-caused-by-build-differences.patch"
     "sha256=e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
diff --git a/packages/js_of_ocaml-toplevel/js_of_ocaml-toplevel.6.0.1+ox/files/js_of_ocaml-ocaml_version-ppx.patch b/packages/js_of_ocaml-toplevel/js_of_ocaml-toplevel.6.0.1+ox/files/js_of_ocaml-ocaml_version-ppx.patch
deleted file mode 100644
index d82b9d1fb..000000000
--- a/packages/js_of_ocaml-toplevel/js_of_ocaml-toplevel.6.0.1+ox/files/js_of_ocaml-ocaml_version-ppx.patch
+++ /dev/null
@@ -1,24 +0,0 @@
---- a/toplevel/lib/jsooTop.ml
-+++ b/toplevel/lib/jsooTop.ml
-@@ -65,6 +65,7 @@
-     p := !p + len'';
-     len''
-
-+[%%if ocaml_version < (4, 14, 0)]
- let use ffp content =
-   let fname, oc =
-     Filename.open_temp_file ~mode:[ Open_binary ] "jsoo_toplevel" "fake_stdin"
-@@ -78,10 +79,11 @@
-   with e ->
-     Sys.remove fname;
-     raise e
--[@@if ocaml_version < (4, 14, 0)]
-+[%%endif]
-
-+[%%if ocaml_version >= (4, 14, 0)]
- let use ffp content = Toploop.use_silently ffp (String content)
--[@@if ocaml_version >= (4, 14, 0)]
-+[%%endif]
-
- let execute printval ?pp_code ?highlight_location pp_answer s =
-   let lb = Lexing.from_function (refill_lexbuf s (ref 0) pp_code) in
diff --git a/packages/js_of_ocaml-toplevel/js_of_ocaml-toplevel.6.0.1+ox/opam b/packages/js_of_ocaml-toplevel/js_of_ocaml-toplevel.6.0.1+ox/opam
index 2c9f83e60..4d4395e15 100644
--- a/packages/js_of_ocaml-toplevel/js_of_ocaml-toplevel.6.0.1+ox/opam
+++ b/packages/js_of_ocaml-toplevel/js_of_ocaml-toplevel.6.0.1+ox/opam
@@ -45,7 +45,6 @@ patches: [
   "js_of_ocaml-add-unboxed-and-float-block.patch"
   "js_of_ocaml-ident-is_global.patch"
   "js_of_ocaml-remove-float-externals.patch"
-  "js_of_ocaml-ocaml_version-ppx.patch"
   "js_of_ocaml-test-diffs-caused-by-build-differences.patch"
   "js_of_ocaml-fix-build_fs.patch"
   "js_of_ocaml-iarray-primitives.patch"
@@ -114,10 +113,6 @@ extra-files: [
     "js_of_ocaml-remove-float-externals.patch"
     "sha256=e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
   ]
-  [
-    "js_of_ocaml-ocaml_version-ppx.patch"
-    "sha256=df6bcb6da8aa3dfd6bd0a178679987d41c400ec1803f4a66659cfc822d1b280f"
-  ]
   [
     "js_of_ocaml-test-diffs-caused-by-build-differences.patch"
     "sha256=e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
diff --git a/packages/js_of_ocaml/js_of_ocaml.6.0.1+ox/files/js_of_ocaml-ocaml_version-ppx.patch b/packages/js_of_ocaml/js_of_ocaml.6.0.1+ox/files/js_of_ocaml-ocaml_version-ppx.patch
deleted file mode 100644
index d82b9d1fb..000000000
--- a/packages/js_of_ocaml/js_of_ocaml.6.0.1+ox/files/js_of_ocaml-ocaml_version-ppx.patch
+++ /dev/null
@@ -1,24 +0,0 @@
---- a/toplevel/lib/jsooTop.ml
-+++ b/toplevel/lib/jsooTop.ml
-@@ -65,6 +65,7 @@
-     p := !p + len'';
-     len''
-
-+[%%if ocaml_version < (4, 14, 0)]
- let use ffp content =
-   let fname, oc =
-     Filename.open_temp_file ~mode:[ Open_binary ] "jsoo_toplevel" "fake_stdin"
-@@ -78,10 +79,11 @@
-   with e ->
-     Sys.remove fname;
-     raise e
--[@@if ocaml_version < (4, 14, 0)]
-+[%%endif]
-
-+[%%if ocaml_version >= (4, 14, 0)]
- let use ffp content = Toploop.use_silently ffp (String content)
--[@@if ocaml_version >= (4, 14, 0)]
-+[%%endif]
-
- let execute printval ?pp_code ?highlight_location pp_answer s =
-   let lb = Lexing.from_function (refill_lexbuf s (ref 0) pp_code) in
diff --git a/packages/js_of_ocaml/js_of_ocaml.6.0.1+ox/opam b/packages/js_of_ocaml/js_of_ocaml.6.0.1+ox/opam
index f3b8c5fa8..358aaa24b 100644
--- a/packages/js_of_ocaml/js_of_ocaml.6.0.1+ox/opam
+++ b/packages/js_of_ocaml/js_of_ocaml.6.0.1+ox/opam
@@ -42,7 +42,6 @@ patches: [
   "js_of_ocaml-add-unboxed-and-float-block.patch"
   "js_of_ocaml-ident-is_global.patch"
   "js_of_ocaml-remove-float-externals.patch"
-  "js_of_ocaml-ocaml_version-ppx.patch"
   "js_of_ocaml-test-diffs-caused-by-build-differences.patch"
   "js_of_ocaml-fix-build_fs.patch"
   "js_of_ocaml-iarray-primitives.patch"
@@ -111,10 +110,6 @@ extra-files: [
     "js_of_ocaml-remove-float-externals.patch"
     "sha256=e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
   ]
-  [
-    "js_of_ocaml-ocaml_version-ppx.patch"
-    "sha256=df6bcb6da8aa3dfd6bd0a178679987d41c400ec1803f4a66659cfc822d1b280f"
-  ]
   [
     "js_of_ocaml-test-diffs-caused-by-build-differences.patch"
     "sha256=e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
diff --git a/packages/wasm_of_ocaml-compiler/wasm_of_ocaml-compiler.6.0.1+ox/files/js_of_ocaml-ocaml_version-ppx.patch b/packages/wasm_of_ocaml-compiler/wasm_of_ocaml-compiler.6.0.1+ox/files/js_of_ocaml-ocaml_version-ppx.patch
deleted file mode 100644
index d82b9d1fb..000000000
--- a/packages/wasm_of_ocaml-compiler/wasm_of_ocaml-compiler.6.0.1+ox/files/js_of_ocaml-ocaml_version-ppx.patch
+++ /dev/null
@@ -1,24 +0,0 @@
---- a/toplevel/lib/jsooTop.ml
-+++ b/toplevel/lib/jsooTop.ml
-@@ -65,6 +65,7 @@
-     p := !p + len'';
-     len''
-
-+[%%if ocaml_version < (4, 14, 0)]
- let use ffp content =
-   let fname, oc =
-     Filename.open_temp_file ~mode:[ Open_binary ] "jsoo_toplevel" "fake_stdin"
-@@ -78,10 +79,11 @@
-   with e ->
-     Sys.remove fname;
-     raise e
--[@@if ocaml_version < (4, 14, 0)]
-+[%%endif]
-
-+[%%if ocaml_version >= (4, 14, 0)]
- let use ffp content = Toploop.use_silently ffp (String content)
--[@@if ocaml_version >= (4, 14, 0)]
-+[%%endif]
-
- let execute printval ?pp_code ?highlight_location pp_answer s =
-   let lb = Lexing.from_function (refill_lexbuf s (ref 0) pp_code) in
diff --git a/packages/wasm_of_ocaml-compiler/wasm_of_ocaml-compiler.6.0.1+ox/opam b/packages/wasm_of_ocaml-compiler/wasm_of_ocaml-compiler.6.0.1+ox/opam
index de927e739..8dd27ae1c 100644
--- a/packages/wasm_of_ocaml-compiler/wasm_of_ocaml-compiler.6.0.1+ox/opam
+++ b/packages/wasm_of_ocaml-compiler/wasm_of_ocaml-compiler.6.0.1+ox/opam
@@ -55,7 +55,6 @@ patches: [
   "js_of_ocaml-add-unboxed-and-float-block.patch"
   "js_of_ocaml-ident-is_global.patch"
   "js_of_ocaml-remove-float-externals.patch"
-  "js_of_ocaml-ocaml_version-ppx.patch"
   "js_of_ocaml-test-diffs-caused-by-build-differences.patch"
   "js_of_ocaml-fix-build_fs.patch"
   "js_of_ocaml-iarray-primitives.patch"
@@ -124,10 +123,6 @@ extra-files: [
     "js_of_ocaml-remove-float-externals.patch"
     "sha256=e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
   ]
-  [
-    "js_of_ocaml-ocaml_version-ppx.patch"
-    "sha256=df6bcb6da8aa3dfd6bd0a178679987d41c400ec1803f4a66659cfc822d1b280f"
-  ]
   [
     "js_of_ocaml-test-diffs-caused-by-build-differences.patch"
     "sha256=e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"