[PATCH 3/3] gnu: Add Attic.

[Leo Famulari]

* gnu/packages/backup.scm (attic): New variable.
---
 gnu/packages/backup.scm | 38 ++++++++++++++++++++++++++++++++++++--
 1 file changed, 36 insertions(+), 2 deletions(-)

diff --git a/gnu/packages/backup.scm b/gnu/packages/backup.scm
index 3c703ec..68246e7 100644
--- a/gnu/packages/backup.scm
+++ b/gnu/packages/backup.scm
@@ -1,6 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2014, 2015 Eric Bavier <address@hidden>
 ;;; Copyright © 2014 Ian Denhardt <address@hidden>
+;;; Copyright © 2015 Leo Famulari <address@hidden>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -26,20 +27,22 @@
   #:use-module (guix build-system gnu)
   #:use-module (guix build-system python)
   #:use-module (gnu packages)
+  #:use-module (gnu packages acl)
   #:use-module (gnu packages base)
   #:use-module (gnu packages compression)
   #:use-module (gnu packages dejagnu)
   #:use-module (gnu packages glib)
   #:use-module (gnu packages gnupg)
   #:use-module (gnu packages linux)
+  #:use-module (gnu packages llfuse)
   #:use-module (gnu packages mcrypt)
   #:use-module (gnu packages nettle)
   #:use-module (gnu packages pcre)
-  #:use-module (gnu packages python)
-  #:use-module (gnu packages linux)
   #:use-module (gnu packages pkg-config)
+  #:use-module (gnu packages python)
   #:use-module (gnu packages rsync)
   #:use-module (gnu packages ssh)
+  #:use-module (gnu packages tls)
   #:use-module (gnu packages xml))
 
 (define-public duplicity
@@ -316,3 +319,34 @@ rsync.  Thus you can use rdiff-backup and ssh to securely 
back a hard drive up
 to a remote location, and only the differences will be transmitted.  Finally,
 rdiff-backup is easy to use and settings have sensible defaults.")
     (license license:gpl2+)))
+
+(define-public attic
+  (package
+   (name "attic")
+   (version "0.16")
+   (source (origin
+            (method url-fetch)
+            (uri (string-append
+                  "https://pypi.python.org/packages/source/A/Attic/Attic-";
+                   version ".tar.gz"))
+            (sha256
+             (base32 "0b5skd36r4c0915lwpkqg5hxm49gls9pprs1b7hc40910wlcsl36"))))
+   (build-system python-build-system)
+   (arguments
+    `(#:phases (modify-phases %standard-phases
+     (add-before
+      'build 'set-openssl-prefix
+      (lambda* (#:key inputs #:allow-other-keys)
+        (setenv "ATTIC_OPENSSL_PREFIX" (assoc-ref inputs "openssl"))
+        #t)))))
+   (inputs `(("acl" ,acl)
+             ("llfuse" ,llfuse)
+             ("openssl" ,openssl)
+             ("python-msgpack" ,python-msgpack)))
+   (synopsis "Deduplicating backup program")
+   (description "Attic is a deduplicating backup program.  The main goal of
+Attic is to provide an efficient and secure way to backup data.  The data
+deduplication technique used makes Attic suitable for daily backups since only
+changes are stored.")
+   (home-page "https://attic-backup.org/";)
+   (license license:bsd-3)))
-- 
2.4.3