[PATCH 53/96] gnu: Add ocaml-ppx-deriving

[Julien Lepiller]

* gnu/packages/ocaml.scm (ocaml-ppx-deriving): New variable.
---
 gnu/packages/ocaml.scm | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/gnu/packages/ocaml.scm b/gnu/packages/ocaml.scm
index ae7218a92..cb5f20f6e 100644
--- a/gnu/packages/ocaml.scm
+++ b/gnu/packages/ocaml.scm
@@ -1957,3 +1957,37 @@ programs.  It allows the definition of simple macros and 
file inclusion.  Cppo i
 - reasonably fast
 - simple to install and to maintain.")
     (license license:bsd-3)))
+
+;; this package is not reproducible. This is related to temporary filenames
+;; such as findlib_initxxxxx where xxxxx is random.
+(define-public ocaml-ppx-deriving
+  (package
+    (name "ocaml-ppx-deriving")
+    (version "4.1")
+    (home-page "https://github.com/whitequark/ppx_deriving/";)
+    (source
+      (origin
+        (method url-fetch)
+        (uri (string-append home-page "/archive/v" version ".tar.gz"))
+        (sha256 (base32
+                  "1fr16g121j6zinwcprzlhx2py4271n9jzs2m9hq2f3qli2b1p0vl"))))
+    (build-system ocaml-build-system)
+    (native-inputs `(("js-build-tools" ,ocaml-js-build-tools)
+                     ("cppo" ,ocaml-cppo)
+                     ("ounit" ,ocaml-ounit)
+                     ("opam" ,opam)))
+    (propagated-inputs `(("result" ,ocaml-result)
+                         ("ppx-tools" ,ocaml-ppx-tools)))
+    (arguments `(#:phases
+                 (modify-phases %standard-phases
+                   (delete 'configure)
+                   (add-before 'install 'fix-environment
+                     (lambda* (#:key outputs #:allow-other-keys)
+                       ;; the installation procedures looks for the installed 
module
+                       (setenv "OCAMLPATH"
+                               (string-append (getenv "OCAMLPATH") ":"
+                                              (getenv 
"OCAMLFIND_DESTDIR"))))))))
+    (synopsis "Type-driven code generation for OCaml >=4.02")
+    (description "ppx_deriving provides common infrastructure for generating
+code based on type definitions, and a set of useful plugins for common tasks.")
+    (license license:expat)))
-- 
2.11.0