25/53: gnu: Add rust-num-cpus.

[guix-commits]

efraim pushed a commit to branch master
in repository guix.

commit 5d2ae881ce9abe248c047a50d71d4264b0bd1130
Author: Efraim Flashner <address@hidden>
Date:   Wed Aug 28 16:05:39 2019 +0300

    gnu: Add rust-num-cpus.
    
    * gnu/packages/crates-io.scm (rust-num-cpus): New variable.
---
 gnu/packages/crates-io.scm | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index beec57a..44dde04 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -744,6 +744,31 @@ types as proposed in RFC 1158.")
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-num-cpus
+  (package
+    (name "rust-num-cpus")
+    (version "1.10.1")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "num_cpus" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0wrj3zvj6h3q26sqj9zxpd59frjb54n7jhjwf307clq31ic47vxw"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-libc" ,rust-libc))
+       #:cargo-development-inputs
+       (("rust-doc-comment" ,rust-doc-comment))))
+    (home-page "https://github.com/seanmonstar/num_cpus";)
+    (synopsis "Get the number of CPUs on a machine")
+    (description
+     "Get the number of CPUs on a machine.")
+    (license (list license:asl2.0
+                   license:expat))))
+
 (define-public rust-num-integer
   (package
     (name "rust-num-integer")