[bug#49867] [PATCH v2 21/31] gnu: Add ocaml-ppx-deriving-yojson.

[pukkamustard]

* gnu/packages/ocaml.scm (ocaml-ppx-deriving-yojson): New variable.
---
 gnu/packages/ocaml.scm | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/gnu/packages/ocaml.scm b/gnu/packages/ocaml.scm
index 92562d1c3a..0a431b2563 100644
--- a/gnu/packages/ocaml.scm
+++ b/gnu/packages/ocaml.scm
@@ -4555,6 +4555,35 @@ generating code based on type definitions, and a set of 
useful plugins for
 common tasks.")
     (license license:expat)))
 
+(define-public ocaml-ppx-deriving-yojson
+  (package
+    (name "ocaml-ppx-deriving-yojson")
+    (version "3.6.1")
+    (home-page "https://github.com/ocaml-ppx/ppx_deriving_yojson";)
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url home-page)
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32
+         "1icz5h6p3pfj7my5gi7wxpflrb8c902dqa17f9w424njilnpyrbk"))))
+    (build-system dune-build-system)
+    (arguments `(#:test-target "."))
+    (propagated-inputs
+     `(("ocaml-yojson" ,ocaml-yojson)
+       ("ocaml-result" ,ocaml-result)
+       ("ocaml-ppx-deriving" ,ocaml-ppx-deriving)
+       ("ocaml-ppxlib" ,ocaml-ppxlib)))
+    (native-inputs `(("ocaml-ounit" ,ocaml-ounit)))
+    (properties `((upstream-name . "ppx_deriving_yojson")))
+    (synopsis "JSON codec generator for OCaml")
+    (description "@code{ocaml-ppx-deriving-yojson} is an OCaml ppx_deriving
+plugin that provides a JSON codec generator.")
+    (license license:expat)))
+
 (define-public ocaml-craml
   (package
     (name "ocaml-craml")
-- 
2.32.0