gnu: Add lapack-3.5.

* gnu/packages/maths.scm (lapack-3.5): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/packages/maths.scm

@@ -473,6 +473,19 @@ (define-public lapack
     (license (license:non-copyleft "file://LICENSE"
                                 "See LICENSE in the distribution."))))
 
+(define-public lapack-3.5
+  (package
+    (inherit lapack)
+    (version "3.5.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "http://www.netlib.org/lapack/lapack-"
+                           version ".tgz"))
+       (sha256
+        (base32
+         "0lk3f97i9imqascnlf6wr5mjpyxqcdj73pgj97dj2mgvyg9z1n4s"))))))
+
 (define-public scalapack
   (package
     (name "scalapack")