diff --git a/pkgs/development/ocaml-modules/base/default.nix b/pkgs/development/ocaml-modules/base/default.nix
deleted file mode 100644
index f7627567f9c..00000000000
--- a/pkgs/development/ocaml-modules/base/default.nix
+++ /dev/null
@@ -1,24 +0,0 @@
-{ stdenv, fetchurl, ocaml, jbuilder, findlib }:
-
-if !stdenv.lib.versionAtLeast ocaml.version "4.03"
-then throw "base is not available for OCaml ${ocaml.version}" else
-
-stdenv.mkDerivation {
-  name = "ocaml${ocaml.version}-base-0.9.0";
-
-  src = fetchurl {
-    url = http://ocaml.janestreet.com/ocaml-core/v0.9/files/base-v0.9.0.tar.gz;
-    sha256 = "0pdpa3hflbqn978ppvv5y08cjya0k8xpf1h0kcak6bdrmnmiwlyx";
-  };
-
-  buildInputs = [ ocaml jbuilder findlib ];
-
-  inherit (jbuilder) installPhase;
-
-  meta = {
-    license = stdenv.lib.licenses.asl20;
-    inherit (ocaml.meta) platforms;
-    homepage = https://github.com/janestreet/base;
-    description = "Full standard library replacement for OCaml";
-  };
-}
diff --git a/pkgs/development/ocaml-modules/janestreet/ocaml-compiler-libs.nix b/pkgs/development/ocaml-modules/janestreet/ocaml-compiler-libs.nix
deleted file mode 100644
index 7d7e44ab9cc..00000000000
--- a/pkgs/development/ocaml-modules/janestreet/ocaml-compiler-libs.nix
+++ /dev/null
@@ -1,21 +0,0 @@
-{ stdenv, fetchurl, ocaml, jbuilder, findlib }:
-
-stdenv.mkDerivation {
-	name = "ocaml${ocaml.version}-ocaml-compiler-libs-0.9.0"; 
-	src = fetchurl {
-		url = http://ocaml.janestreet.com/ocaml-core/v0.9/files/ocaml-compiler-libs-v0.9.0.tar.gz;
-		sha256 = "0ipi56vg227924ahi9vv926jn16br9zfipm6a3xd4xrl5pxkvzaz";
-	};
-
-	buildInputs = [ ocaml jbuilder findlib ];
-
-	inherit (jbuilder) installPhase;
-
-	meta = {
-		description = "OCaml compiler libraries repackaged";
-		homepage = https://github.com/janestreet/ocaml-compiler-libs;
-		license = stdenv.lib.licenses.asl20;
-		maintainers = [ stdenv.lib.maintainers.vbgl ];
-		inherit (ocaml.meta) platforms;
-	};
-}
diff --git a/pkgs/development/ocaml-modules/janestreet/ppx_ast.nix b/pkgs/development/ocaml-modules/janestreet/ppx_ast.nix
deleted file mode 100644
index 33f1766cb4a..00000000000
--- a/pkgs/development/ocaml-modules/janestreet/ppx_ast.nix
+++ /dev/null
@@ -1,24 +0,0 @@
-{ stdenv, fetchurl, ocaml, jbuilder, findlib
-, ocaml-compiler-libs, ocaml-migrate-parsetree
-}:
-
-stdenv.mkDerivation {
-	name = "ocaml${ocaml.version}-ppx_ast-0.9.0";
-	src = fetchurl {
-		url = http://ocaml.janestreet.com/ocaml-core/v0.9/files/ppx_ast-v0.9.0.tar.gz;
-		sha256 = "1hirfmxr8hkf3p39k1pqidabxxhd541d6ddfaqpgxbl51bw9ddmz";
-	};
-
-	buildInputs = [ ocaml jbuilder findlib ];
-	propagatedBuildInputs = [ ocaml-compiler-libs ocaml-migrate-parsetree ];
-
-	inherit (jbuilder) installPhase;
-
-	meta = {
-		description = "OCaml AST used by Jane Street ppx rewriters";
-		homepage = https://github.com/janestreet/ppx_ast;
-		license = stdenv.lib.licenses.asl20;
-		maintainers = [ stdenv.lib.maintainers.vbgl ];
-		inherit (ocaml.meta) platforms;
-	};
-}
diff --git a/pkgs/development/ocaml-modules/janestreet/ppx_traverse_builtins.nix b/pkgs/development/ocaml-modules/janestreet/ppx_traverse_builtins.nix
deleted file mode 100644
index d84983ed634..00000000000
--- a/pkgs/development/ocaml-modules/janestreet/ppx_traverse_builtins.nix
+++ /dev/null
@@ -1,21 +0,0 @@
-{ stdenv, fetchurl, ocaml, jbuilder, findlib }:
-
-stdenv.mkDerivation {
-	name = "ocaml${ocaml.version}-ppx_traverse_builtins-0.9.0";
-	src = fetchurl {
-		url = http://ocaml.janestreet.com/ocaml-core/v0.9/files/ppx_traverse_builtins-v0.9.0.tar.gz;
-		sha256 = "0zmf9kybll0xn8dsj10v260l0zwjyykimqml9rl7xqyjyl1rmnx6";
-	};
-
-	buildInputs = [ ocaml jbuilder findlib ];
-
-	inherit (jbuilder) installPhase;
-
-	meta = {
-		description = "Builtins for Ppx_traverse";
-		homepage = https://github.com/janestreet/ppx_traverse_builtins;
-		license = stdenv.lib.licenses.asl20;
-		inherit (ocaml.meta) platforms;
-		maintainers = [ stdenv.lib.maintainers.vbgl ];
-	};
-}
diff --git a/pkgs/development/ocaml-modules/stdio/default.nix b/pkgs/development/ocaml-modules/stdio/default.nix
deleted file mode 100644
index 87382330022..00000000000
--- a/pkgs/development/ocaml-modules/stdio/default.nix
+++ /dev/null
@@ -1,22 +0,0 @@
-{ stdenv, fetchurl, ocaml, jbuilder, findlib, base }:
-
-stdenv.mkDerivation {
-  name = "ocaml${ocaml.version}-stdio-0.9.0";
-
-  src = fetchurl {
-    url = http://ocaml.janestreet.com/ocaml-core/v0.9/files/stdio-v0.9.0.tar.gz;
-    sha256 = "008b5y03223107gfv8qawdfyjvf5g97l472i5p5v8mp512wr7kj5";
-  };
-
-  buildInputs = [ ocaml jbuilder findlib ];
-  propagatedBuildInputs = [ base ];
-
-  inherit (jbuilder) installPhase;
-
-  meta = {
-    license = stdenv.lib.licenses.asl20;
-    description = "Standard IO library for OCaml";
-    homepage = https://github.com/janestreet/stdio;
-    inherit (ocaml.meta) platforms;
-  };
-}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index af0c31dc608..b2012923adf 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -48,8 +48,6 @@ let
 
     atdgen = callPackage ../development/ocaml-modules/atdgen { };
 
-    base = callPackage ../development/ocaml-modules/base { };
-
     base64 = callPackage ../development/ocaml-modules/base64 { };
 
     bap = callPackage ../development/ocaml-modules/bap { };
@@ -526,8 +524,6 @@ let
 
     sqlite3EZ = callPackage ../development/ocaml-modules/sqlite3EZ { };
 
-    stdio = callPackage ../development/ocaml-modules/stdio { };
-
     stog = callPackage ../applications/misc/stog { };
 
     stringext = callPackage ../development/ocaml-modules/stringext { };
@@ -596,10 +592,6 @@ let
 
     buildOcamlJane = callPackage ../development/ocaml-modules/janestreet/buildOcamlJane.nix {};
 
-    ocaml-compiler-libs = callPackage ../development/ocaml-modules/janestreet/ocaml-compiler-libs.nix {};
-
-    ppx_ast = callPackage ../development/ocaml-modules/janestreet/ppx_ast.nix {};
-
     ppx_core =
       if lib.versionOlder "4.03" ocaml.version
       then callPackage ../development/ocaml-modules/janestreet/ppx_core-113_33_01.nix {}
@@ -707,8 +699,6 @@ let
       then callPackage ../development/ocaml-modules/janestreet/ppx_jane-113_33_00.nix {}
       else callPackage ../development/ocaml-modules/janestreet/ppx-jane.nix {};
 
-    ppx_traverse_builtins = callPackage ../development/ocaml-modules/janestreet/ppx_traverse_builtins.nix {};
-
 
     # Core sublibs
     typerep =