temporary fix for yallop/ocaml-ctypes#552

packages/ctypes.0.13.0+99/descr

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+Combinators for binding to C libraries without writing any C.
+
+ctypes is a library for binding to C libraries using pure OCaml. The primary
+aim is to make writing C extensions as straightforward as possible.
+
+The core of ctypes is a set of combinators for describing the structure of C
+types -- numeric types, arrays, pointers, structs, unions and functions. You
+can use these combinators to describe the types of the functions that you want
+to call, then bind directly to those functions -- all without writing or
+generating any C!
+
+To install the optional `ctypes.foreign` interface (which uses `libffi` to
+provide dynamic access to foreign libraries), you will need to also install
+the `ctypes-foreign` optional dependency:
+
+    opam install ctypes ctypes-foreign
+
+This will make the `ctypes.foreign` ocamlfind subpackage available.

packages/ctypes.0.13.0+99/opam

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+opam-version: "1.2"
+maintainer: "yallop@gmail.com"
+author: "yallop@gmail.com"
+homepage: "https://github.com/ocamllabs/ocaml-ctypes"
+doc: "http://ocamllabs.github.io/ocaml-ctypes"
+dev-repo: "http://github.com/ocamllabs/ocaml-ctypes.git"
+bug-reports: "http://github.com/ocamllabs/ocaml-ctypes/issues"
+license: "MIT"
+build: [
+  [make "XEN=%{mirage-xen:enable}%" "libffi.config"] {ctypes-foreign:installed}
+  ["touch" "libffi.config"]                          {!ctypes-foreign:installed}
+  [make "XEN=%{mirage-xen:enable}%" "ctypes-base" "ctypes-stubs"]
+  [make "XEN=%{mirage-xen:enable}%" "ctypes-foreign"] {ctypes-foreign:installed}
+]
+build-test: [
+   [make "test"]
+]
+install: [
+  [make "install" "XEN=%{mirage-xen:enable}%"]
+]
+remove: [
+  ["ocamlfind" "remove" "ctypes"]
+]
+depends: [
+   "base-bytes"
+   "integers"
+   "ocamlfind" {build}
+   "conf-pkg-config" {build}
+   "lwt" {test}
+   "ounit" {test}
+   "ctypes-foreign" {test}
+   "conf-ncurses" {test}
+]
+depopts: [
+   "ctypes-foreign"
+   "mirage-xen"
+]
+tags: ["org:ocamllabs" "org:mirage"]
+available: [ ocaml-version >= "4.01.0" ]

packages/ctypes.0.13.0+99/url

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+archive: "https://github.com/yallop/ocaml-ctypes/archive/a270d64201037c995a81d246e28a2d56a4f9acaa.tar.gz"