40/60: gnu: Add rust-wayland-sys-0.21.

[guix-commits]

efraim pushed a commit to branch master
in repository guix.

commit d78c798bd70219307d6a7554d9380709fce7be87
Author: Valentin Ignatev <address@hidden>
AuthorDate: Sun Feb 2 02:47:57 2020 +0300

    gnu: Add rust-wayland-sys-0.21.
    
    * gnu/packages/crates-io.scm (rust-wayland-sys-0.21): New variable.
    
    Signed-off-by: Efraim Flashner <address@hidden>
---
 gnu/packages/crates-io.scm | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index ba13289..5bc939a 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -19750,6 +19750,21 @@ You should only need this crate if you are working on 
custom wayland
 protocol extensions.  Look at the crate wayland-client for usable bindings.")
     (license license:expat)))
 
+(define-public rust-wayland-sys-0.21
+  (package
+    (inherit rust-wayland-sys-0.23)
+    (name "rust-wayland-sys")
+    (version "0.21.13")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "wayland-sys" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0a0ndgkg98pvmkv44yya4f7mxzjaxylknqh64bpa05w0azyv02jj"))))))
+
 (define-public rust-wayland-client-0.23
   (package
     (name "rust-wayland-client")