diff --git a/packages/conf-zmq-android.0.1/descr b/packages/conf-zmq-android.0.1/descr
new file mode 100644
index 0000000..9305455
--- /dev/null
+++ b/packages/conf-zmq-android.0.1/descr
@@ -0,0 +1,3 @@
+Virtual package relying on zmq library installation.
+This package can only install if the zmq devel library is installed
+on the system.
diff --git a/packages/conf-zmq-android.0.1/files/test.c b/packages/conf-zmq-android.0.1/files/test.c
new file mode 100644
index 0000000..fc4e31b
--- /dev/null
+++ b/packages/conf-zmq-android.0.1/files/test.c
@@ -0,0 +1,7 @@
+#include <zmq.h>
+
+// compile with: gcc test.c -lzmq
+
+int main () {
+  return 0;
+}
diff --git a/packages/conf-zmq-android.0.1/opam b/packages/conf-zmq-android.0.1/opam
new file mode 100644
index 0000000..b7d0528
--- /dev/null
+++ b/packages/conf-zmq-android.0.1/opam
@@ -0,0 +1,7 @@
+opam-version: "1"
+maintainer: "francois.berenger@inria.fr"
+homepage: "http://zeromq.org/"
+license: "LGPL"
+build: [
+  ["ocamlfind" "-toolchain" "android" "ocamlc" "test.c" "-cclib" "-lzmq"]
+]
diff --git a/packages/ppx_deriving_protobuf-android.2.5/opam b/packages/ppx_deriving_protobuf-android.2.5/opam
new file mode 100644
index 0000000..1ed6afa
--- /dev/null
+++ b/packages/ppx_deriving_protobuf-android.2.5/opam
@@ -0,0 +1,30 @@
+opam-version: "1.2"
+maintainer: "whitequark <whitequark@whitequark.org>"
+authors: [ "whitequark <whitequark@whitequark.org>" ]
+license: "MIT"
+homepage: "https://github.com/whitequark/ppx_deriving_protobuf"
+doc: "https://whitequark.github.io/ppx_deriving_protobuf"
+bug-reports: "https://github.com/whitequark/ppx_deriving_protobuf/issues"
+dev-repo: "https://github.com/whitequark/ppx_deriving_protobuf.git"
+tags: [ "syntax" ]
+substs: [ "pkg/META" ]
+build: ["ocaml" "pkg/build.ml" "native=%{ocaml-native}%"
+                         "native-dynlink=%{ocaml-native-dynlink}%"
+]
+build-test: [
+  "ocamlbuild" "-classic-display" "-use-ocamlfind" "src_test/test_ppx_protobuf.byte" "--"
+]
+
+build-doc: [
+  make "doc"
+]
+install: [["opam" "installer" "--prefix=%{prefix}%/android-sysroot" "ppx_deriving_protobuf.install"]]
+remove: [["ocamlfind" "-toolchain" "android" "remove" "ppx_deriving_protobuf"]]
+depends: [
+  "ocaml-android"
+  "ocamlbuild"   {build}
+  "cppo"         {build}
+  "ppx_deriving-android" {>= "3.2" & < "5.0"}
+  "ounit"        {test}
+  "uint"         {test}
+]
diff --git a/packages/ppx_deriving_protobuf-android.2.5/url b/packages/ppx_deriving_protobuf-android.2.5/url
new file mode 100644
index 0000000..d458519
--- /dev/null
+++ b/packages/ppx_deriving_protobuf-android.2.5/url
@@ -0,0 +1,3 @@
+http:
+  "https://github.com/whitequark/ppx_deriving_protobuf/archive/v2.5.tar.gz"
+checksum: "2e3ba97f2354ba51cb470f899e3ccc25"
diff --git a/packages/stdint-android.0.3.0/opam b/packages/stdint-android.0.3.0/opam
new file mode 100644
index 0000000..41bb92e
--- /dev/null
+++ b/packages/stdint-android.0.3.0/opam
@@ -0,0 +1,26 @@
+opam-version: "1.2"
+maintainer: "Markus W. Weissmann <markus.weissmann@in.tum.de>"
+authors: [
+  "Andre Nathan <andre@digirati.com.br>"
+  "Jeff Shaw <shawjef3@msu.edu>"
+  "Markus W. Weissmann <markus.weissmann@in.tum.de>"
+  "Florian Pichlmeier <florian.pichlmeier@mytum.de>"
+]
+license: "MIT"
+homepage: "https://github.com/andrenth/ocaml-stdint"
+doc: "http://stdint.forge.ocamlcore.org/doc/"
+dev-repo: "https://github.com/andrenth/ocaml-stdint.git"
+bug-reports: "https://github.com/andrenth/ocaml-stdint/issues"
+build: [
+  ["ocaml" "setup.ml" "-configure" "--prefix" "%{prefix}%/android-sysroot"]
+  ["env" "OCAMLFIND_TOOLCHAIN=android" "ocaml" "setup.ml" "-build"]
+]
+install: [
+  ["env" "OCAMLFIND_TOOLCHAIN=android" "ocaml" "setup.ml" "-install"]
+]
+remove: [["ocamlfind" "-toolchain" "android" "remove" "stdint"]]
+build-doc: [ "ocaml" "setup.ml" "-doc" ]
+depends: [
+  "ocaml-android"
+  "ocamlbuild" {build}
+]
diff --git a/packages/stdint-android.0.3.0/url b/packages/stdint-android.0.3.0/url
new file mode 100644
index 0000000..a19d180
--- /dev/null
+++ b/packages/stdint-android.0.3.0/url
@@ -0,0 +1,2 @@
+archive: "https://github.com/andrenth/ocaml-stdint/archive/0.3.0.tar.gz"
+checksum: "1f9fa21baf9c0df490a841a6e916963a"
diff --git a/packages/zmq-android.4.0-8/opam b/packages/zmq-android.4.0-8/opam
new file mode 100644
index 0000000..0edec09
--- /dev/null
+++ b/packages/zmq-android.4.0-8/opam
@@ -0,0 +1,26 @@
+opam-version: "1.2"
+maintainer: "anders@fugmann.net"
+homepage: "https://github.com/issuu/ocaml-zmq"
+authors: [ "Anders Fugman" "Pedro Borges" "Peter Zotov" ]
+license: "MIT"
+dev-repo: "https://github.com/issuu/ocaml-zmq.git"
+bug-reports: "https://github.com/issuu/ocaml-zmq/issues"
+build: [
+  ["env" "OCAMLFIND_TOOLCHAIN=android" "ocaml" "setup.ml" "-configure" "--prefix" "%{prefix}%/android-sysroot"]
+  ["env" "OCAMLFIND_TOOLCHAIN=android" "ocaml" "setup.ml" "-build"]
+]
+install: [
+  ["env" "OCAMLFIND_TOOLCHAIN=android" "ocaml" "setup.ml" "-install"]
+]
+remove: [
+  ["ocamlfind" "-toolchain" "android" "remove" "ZMQ"]
+]
+depends: [
+  "ocaml-android"
+  "conf-zmq-android"
+  "stdint-android"
+  "ocamlbuild" {build}
+]
+conflicts: [
+  "ocaml-zmq"
+]
diff --git a/packages/zmq-android.4.0-8/url b/packages/zmq-android.4.0-8/url
new file mode 100644
index 0000000..4511f28
--- /dev/null
+++ b/packages/zmq-android.4.0-8/url
@@ -0,0 +1,2 @@
+archive: "https://github.com/issuu/ocaml-zmq/archive/4.0-8.tar.gz"
+checksum: "dd0d5a27942bf8f86666ad783124cb23"