gnu: Add rust-pango-sys-0.10.

* gnu/packages/crates-gtk.scm (rust-pango-sys-0.10): New variable.
(rust-pango-sys-0.9): inherit from above.

gnu/packages/crates-gtk.scm

@@ -633,20 +633,44 @@
        #:cargo-development-inputs
        (("rust-gir-format-check" ,rust-gir-format-check-0.1))))))
 
+(define-public rust-pango-sys-0.10
+  (package
+    (name "rust-pango-sys")
+    (version "0.10.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "pango-sys" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "1468xzyk2wanxb2b32fsmwk6bnafdaicxl5b4301dlb2ic66bli4"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-glib-sys" ,rust-glib-sys-0.10)
+        ("rust-gobject-sys" ,rust-gobject-sys-0.10)
+        ("rust-libc" ,rust-libc-0.2)
+        ("rust-system-deps" ,rust-system-deps-1))))
+    (inputs
+     `(("pango" ,pango)))
+    (home-page "http://gtk-rs.org/")
+    (synopsis "FFI bindings to libpango-1.0")
+    (description "This package provides FFI bindings to @code{libpango-1.0}.")
+    (license license:expat)))
+
 (define-public rust-pango-sys-0.9
   (package
+    (inherit rust-pango-sys-0.10)
     (name "rust-pango-sys")
     (version "0.9.1")
     (source
      (origin
        (method url-fetch)
        (uri (crate-uri "pango-sys" version))
-        (file-name
+       (file-name (string-append name "-" version ".tar.gz"))
-         (string-append name "-" version ".tar.gz"))
        (sha256
-         (base32
+        (base32 "0zdynikh6jrfa31fpmbrwnz46a57idci73zzkf0z0g3vj223vfc6"))))
-          "0zdynikh6jrfa31fpmbrwnz46a57idci73zzkf0z0g3vj223vfc6"))))
-    (build-system cargo-build-system)
     (arguments
      `(#:tests? #f                  ; Some test files not included in release.
        #:cargo-inputs
@@ -656,13 +680,7 @@
         ("rust-pkg-config" ,rust-pkg-config-0.3))
        #:cargo-development-inputs
        (("rust-shell-words" ,rust-shell-words-0.1)
-        ("rust-tempfile" ,rust-tempfile-3))))
+        ("rust-tempfile" ,rust-tempfile-3))))))
-    (inputs
-     `(("pango" ,pango)))
-    (home-page "https://gtk-rs.org/")
-    (synopsis "FFI bindings to libpango-1.0")
-    (description "This package provides FFI bindings to @code{libpango-1.0}.")
-    (license license:expat)))
 
 (define-public rust-pangocairo-0.9
   (package