gnu: Add rust-graphene-sys-0.18.

* gnu/packages/crates-gtk.scm (rust-graphene-sys-0.18): New variable.

Change-Id: I90fd74b62dc291454b47a606129bfd75508ff994
Signed-off-by: Efraim Flashner <efraim@flashner.co.il>

gnu/packages/crates-gtk.scm

@@ -1910,6 +1910,32 @@
        (("rust-shell-words" ,rust-shell-words-0.1)
         ("rust-tempfile" ,rust-tempfile-3))))))
 
+(define-public rust-graphene-sys-0.18
+  (package
+    (name "rust-graphene-sys")
+    (version "0.18.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "graphene-sys" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "0n8zlg7z26lwpnvlqp1hjlgrs671skqwagdpm7r8i1zwx3748hfc"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs (("rust-glib-sys" ,rust-glib-sys-0.18)
+                       ("rust-libc" ,rust-libc-0.2)
+                       ("rust-pkg-config" ,rust-pkg-config-0.3)
+                       ("rust-system-deps" ,rust-system-deps-6))
+       #:cargo-development-inputs (("rust-shell-words" ,rust-shell-words-1)
+                                   ("rust-tempfile" ,rust-tempfile-3))))
+    (native-inputs (list pkg-config))
+    (inputs (list glib graphene))
+    (home-page "https://gtk-rs.org/")
+    (synopsis "FFI bindings to libgraphene-1.0")
+    (description "FFI bindings to libgraphene-1.0.")
+    (license license:expat)))
+
 (define-public rust-gstreamer-0.18
   (package
     (name "rust-gstreamer")