256/299: gnu: Add rust-crossbeam-deque-0.6.

[guix-commits]

efraim pushed a commit to branch master
in repository guix.

commit 8dbe08652d176d7755ad5c1f50c5ad33898e228a
Author: John Soo <address@hidden>
Date:   Fri Dec 20 08:08:58 2019 -0800

    gnu: Add rust-crossbeam-deque-0.6.
    
    * gnu/packages/crates-io.scm (rust-crossbeam-deque-0.6): 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 8735adc..05364f0 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -1736,6 +1736,21 @@ intrinsics.")
     (description "Concurrent work-stealing deque.")
     (license (list license:expat license:asl2.0))))
 
+(define-public rust-crossbeam-deque-0.6
+  (package
+    (inherit rust-crossbeam-deque-0.7)
+    (name "rust-crossbeam-deque")
+    (version "0.6.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "crossbeam-deque" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "04rcpgjs6ns57vag8a3dzx26190dhbvy2l0p9n22b9p1yf64pr05"))))))
+
 (define-public rust-crossbeam-epoch-0.7
   (package
     (name "rust-crossbeam-epoch")