gnu: Add rust-slice-deque-0.3.

* gnu/packages/crates-io.scm (rust-slice-deque-0.3): New variable.

Signed-off-by: Efraim Flashner <efraim@flashner.co.il>
Change-Id: I59ada30e096d14088b2fe87a0ef2e3d85470bd95

gnu/packages/crates-io.scm

@@ -66667,8 +66667,32 @@ implementations.")
      "Rust FFI bindings to the SLEEF Vectorized Math Library.")
     (license (list license:asl2.0 license:expat))))
 
+(define-public rust-slice-deque-0.3
+  (package
+    (name "rust-slice-deque")
+    (version "0.3.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "slice-deque" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "098gvqjw52qw4gac567c9hx3y6hw9al7hjqb5mnvmvydh3i6xvri"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-libc" ,rust-libc-0.2)
+        ("rust-mach" ,rust-mach-0.3)
+        ("rust-winapi" ,rust-winapi-0.3))))
+    (home-page "https://github.com/gnzlbg/slice_deque")
+    (synopsis "Double-ended queue that Deref's into a slice")
+    (description
+     "This package provides a double-ended queue that Deref's into a slice.")
+    (license (list license:expat license:asl2.0))))
+
 (define-public rust-slice-deque-0.2
   (package
+    (inherit rust-slice-deque-0.3)
     (name "rust-slice-deque")
     (version "0.2.4")
     (source
@@ -66678,18 +66702,12 @@ implementations.")
        (file-name (string-append name "-" version ".tar.gz"))
        (sha256
         (base32 "1mq78l0vfwabnyanb85amgzakfhdaxx455yq6cszd5zmynagbpgz"))))
-    (build-system cargo-build-system)
     (arguments
      `(#:skip-build? #t
        #:cargo-inputs
        (("rust-libc" ,rust-libc-0.2)
         ("rust-mach" ,rust-mach-0.2)
-        ("rust-winapi" ,rust-winapi-0.3))))
-    (home-page "https://github.com/gnzlbg/slice_deque")
-    (synopsis "Double-ended queue that Deref's into a slice")
-    (description
-     "This package provides a double-ended queue that Deref's into a slice.")
-    (license (list license:expat license:asl2.0))))
+        ("rust-winapi" ,rust-winapi-0.3))))))
 
 (define-public rust-slog-2
   (package