gnu: Add rust-glutin-wgl-sys-0.6.

* gnu/packages/crates-graphics.scm (rust-glutin-wgl-sys-0.6): New
variable.
(rust-glutin-wgl-sys-0.5): Inherit from rust-glutin-wgl-sys-0.6.

Change-Id: I68a35f7508f563e71e4ea7a8e22f5438fbeddd45

gnu/packages/crates-graphics.scm

@@ -2116,8 +2116,28 @@ EUI-64, also known as MAC-48 media access control addresses.")
        (("rust-gl-generator" ,rust-gl-generator-0.14)
         ("rust-x11-dl" ,rust-x11-dl-2))))))
 
+(define-public rust-glutin-wgl-sys-0.6
+  (package
+    (name "rust-glutin-wgl-sys")
+    (version "0.6.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "glutin_wgl_sys" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "0b0y444rc9sf67wqayyj40wayd92rjffavs9ma0llhyrpd8ijkha"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs (("rust-gl-generator" ,rust-gl-generator-0.14))))
+    (home-page "https://github.com/rust-windowing/glutin")
+    (synopsis "Wgl bindings for glutin")
+    (description "This package provides the wgl bindings for glutin.")
+    (license license:asl2.0)))
+
 (define-public rust-glutin-wgl-sys-0.5
   (package
+    (inherit rust-glutin-wgl-sys-0.6)
     (name "rust-glutin-wgl-sys")
     (version "0.5.0")
     (source
@@ -2127,13 +2147,8 @@ EUI-64, also known as MAC-48 media access control addresses.")
        (file-name (string-append name "-" version ".tar.gz"))
        (sha256
         (base32 "1b9f6qjc8gwhfxac4fpxkvv524l493f6b6q764nslpwmmjnri03c"))))
-    (build-system cargo-build-system)
     (arguments
-     `(#:cargo-inputs (("rust-gl-generator" ,rust-gl-generator-0.14))))
+     `(#:cargo-inputs (("rust-gl-generator" ,rust-gl-generator-0.14))))))
-    (home-page "https://github.com/rust-windowing/glutin")
-    (synopsis "Wgl bindings for glutin")
-    (description "This package provides wgl bindings for glutin.")
-    (license license:asl2.0)))
 
 (define-public rust-glutin-wgl-sys-0.4
   (package