gnu: Add mlocate.

* gnu/packages/search.scm (mlocate): New variable.

gnu/packages/search.scm

@@ -1,6 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2014 Mark H Weaver <mhw@netris.org>
-;;; Copyright © 2015 Eric Bavier <bavier@member.fsf.org>
+;;; Copyright © 2015, 2016 Eric Bavier <bavier@member.fsf.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -19,7 +19,7 @@
 
 (define-module (gnu packages search)
   #:use-module ((guix licenses)
-                #:select (gpl2+ gpl3+ bsd-3 x11))
+                #:select (gpl2 gpl2+ gpl3+ bsd-3 x11))
   #:use-module (guix packages)
   #:use-module (guix download)
   #:use-module (guix build-system gnu)
@@ -148,4 +148,27 @@ accounting for new lines and paragraph changes.  It also has robust support
 for parsing HTML files.")
     (license gpl3+)))
 
+(define-public mlocate
+  (package
+    (name "mlocate")
+    (version "0.26")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://fedorahosted.org/releases/m/l/"
+                                  "mlocate/mlocate-" version ".tar.xz"))
+              (sha256
+               (base32
+                "0gi6y52gkakhhlnzy0p6izc36nqhyfx5830qirhvk3qrzrwxyqrh"))))
+    (build-system gnu-build-system)
+    (home-page "https://fedorahosted.org/mlocate/")
+    (synopsis "Locate files on the filesystem")
+    (description
+     "mlocate is a locate/updatedb implementation.  The 'm' stands for
+\"merging\": @code{updatedb} reuses the existing database to avoid rereading
+most of the file system, which makes it faster and does not trash the system
+caches as much.  The locate(1) utility is intended to be completely compatible
+with slocate, and attempts to be compatible to GNU locate when it does not
+conflict with slocate compatibility.")
+    (license gpl2)))
+
 ;;; search.scm ends here