gnu: Add rust-glutin-0.21.

* gnu/packages/crates-io.scm (rust-glutin-0.21): New variable.

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

gnu/packages/crates-io.scm

@@ -6430,6 +6430,41 @@ path simultaneously, and returning all of the globs that matched.")
      "Cross-platform OpenGL context provider.")
     (license license:asl2.0)))
 
+(define-public rust-glutin-0.21
+  (package
+    (inherit rust-glutin-0.22)
+    (name "rust-glutin")
+    (version "0.21.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "glutin" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1ggyyqn7dvz4yx5ygqfvnxwfb78wvdm5y6xqw5my1b4x61dv6wak"))))
+    (arguments
+     `(#:cargo-inputs
+       (("rust-android-glue" ,rust-android-glue-0.2)
+        ("rust-cgl" ,rust-cgl-0.2)
+        ("rust-cocoa" ,rust-cocoa-0.18)
+        ("rust-core-foundation" ,rust-core-foundation-0.6)
+        ("rust-core-graphics" ,rust-core-graphics-0.17)
+        ("rust-glutin-egl-sys" ,rust-glutin-egl-sys-0.1)
+        ("rust-glutin-emscripten-sys" ,rust-glutin-emscripten-sys-0.1)
+        ("rust-glutin-gles2-sys" ,rust-glutin-gles2-sys-0.1)
+        ("rust-glutin-glx-sys" ,rust-glutin-glx-sys-0.1)
+        ("rust-glutin-wgl-sys" ,rust-glutin-wgl-sys-0.1)
+        ("rust-lazy-static" ,rust-lazy-static-1)
+        ("rust-libloading" ,rust-libloading-0.5)
+        ("rust-objc" ,rust-objc-0.2)
+        ("rust-osmesa-sys" ,rust-osmesa-sys-0.1)
+        ("rust-parking-lot" ,rust-parking-lot-0.9)
+        ("rust-wayland-client" ,rust-wayland-client-0.21)
+        ("rust-winapi" ,rust-winapi-0.3)
+        ("rust-winit" ,rust-winit-0.19))))))
+
 (define-public rust-glutin-egl-sys-0.1
   (package
     (name "rust-glutin-egl-sys")