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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages gnutls)
+  #:use-module (guix licenses)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix build-system gnu)
+  #:use-module (gnu packages base)
+  #:use-module ((gnu packages compression)
+                #:renamer (symbol-prefix-proc 'guix:))
+  #:use-module (gnu packages nettle)
+  #:use-module (gnu packages guile)
+  #:use-module (gnu packages perl)
+  #:use-module (gnu packages which))
+
+(define-public libtasn1
+  (package
+    (name "libtasn1")
+    (version "3.2")
+    (source
+     (origin
+      (method url-fetch)
+      (uri (string-append "mirror://gnu/libtasn1/libtasn1-"
+                          version ".tar.gz"))
+      (sha256
+       (base32
+        "0gvgndypwicchf7m660zh7jdgmkfj9g9xavpcc08pyd0120y0bk7"))))
+    (build-system gnu-build-system)
+    (home-page "http://www.gnu.org/software/libtasn1/")
+    (synopsis "GNU Libtasn1, an ASN.1 library")
+    (description
+     "Libtasn1 is the ASN.1 library used by GnuTLS, GNU Shishi and some
+other packages.  The goal of this implementation is to be highly
+portable, and only require an ANSI C89 platform.")
+    (license lgpl2.0+)))
+
+(define-public gnutls
+  (package
+    (name "gnutls")
+    (version "3.1.6")
+    (source
+     (origin
+      (method url-fetch)
+      (uri (string-append
+            "mirror://gnu/gnutls/gnutls-"
+            version
+            ".tar.xz"))
+      (sha256
+       (base32
+        "0zsybr9plllk1phh83bx9bg7c5ccik427j4n3k1s9fiy4j69n0w3"))))
+    (build-system gnu-build-system)
+
+    ;; Build of the Guile bindings is not parallel-safe.  See
+    ;; <http://git.savannah.gnu.org/cgit/gnutls.git/commit/?id=330995a920037b6030ec0282b51dde3f8b493cad>
+    ;; for the actual fix.
+    (arguments '(#:parallel-build? #f))
+
+    (inputs
+     `(("guile" ,guile-2.0)
+       ;; ("lzo" ,lzo)
+       ("zlib" ,guix:zlib)
+       ("perl" ,perl)))
+    (propagated-inputs
+     `(("libtasn1" ,libtasn1)
+       ("nettle" ,nettle)
+       ("which" ,which)))
+    (home-page "http://www.gnu.org/software/gnutls/")
+    (synopsis
+     "The GNU Transport Layer Security Library")
+    (description
+     "GnuTLS is a project that aims to develop a library which provides
+a secure layer, over a reliable transport layer. Currently the GnuTLS
+library implements the proposed standards by the IETF's TLS working
+group.
+
+Quoting from the TLS protocol specification:
+
+\"The TLS protocol provides communications privacy over the
+Internet. The protocol allows client/server applications to communicate
+in a way that is designed to prevent eavesdropping, tampering, or
+message forgery.\"")
+    (license lgpl2.1+)))