[PATCH 1/2] gnu: Add datefudge.

[Cyril Roelandt <tipecaml@gmail.com>]

* gnu/packages/datefudge.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.
---
 gnu-system.am              |    1 +
 gnu/packages/datefudge.scm |   73 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 74 insertions(+)
 create mode 100644 gnu/packages/datefudge.scm

diff --git a/gnu-system.am b/gnu-system.am
index bfead6e..fde1c8c 100644
--- a/gnu-system.am
+++ b/gnu-system.am
@@ -45,6 +45,7 @@ GNU_SYSTEM_MODULES =				\
   gnu/packages/cryptsetup.scm			\
   gnu/packages/curl.scm				\
   gnu/packages/cyrus-sasl.scm			\
+  gnu/packages/datefudge.scm 			\
   gnu/packages/dejagnu.scm			\
   gnu/packages/ddrescue.scm			\
   gnu/packages/dwm.scm				\
diff --git a/gnu/packages/datefudge.scm b/gnu/packages/datefudge.scm
new file mode 100644
index 0000000..418e0ff
--- /dev/null
+++ b/gnu/packages/datefudge.scm
@@ -0,0 +1,73 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2013 Cyril Roelandt <tipecaml@gmail.com>
+;;;
+;;; 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 datefudge)
+  #:use-module (guix licenses)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix build-system gnu)
+  #:use-module (gnu packages)
+  #:use-module (gnu packages perl))
+
+(define-public datefudge
+  (package
+    (name "datefudge")
+    (version "1.18")
+    (source (origin
+             (method url-fetch)
+             (uri (string-append
+                   "http://ftp.de.debian.org/debian/pool/main/d/"
+                   "datefudge/datefudge_" version ".tar.gz"))
+             (sha256
+              (base32
+               "0g26mk6nxfpzlgfj08ig0na9zk03fgghqr86xp5mja2gyfh58s00"))))
+    (build-system gnu-build-system)
+    (arguments
+     '(#:test-target "test"
+       #:phases
+        (alist-replace
+         'configure
+         (lambda* (#:key version outputs #:allow-other-keys #:rest args)
+          (pk version outputs)
+          (let* ((out (assoc-ref outputs "out"))
+                 (version (substring out (+ 1 (string-index-right out #\-)))))
+           ;; The version is retrieved using dpkg-parsechangelog, which is
+           ;; not available in Guix.
+           (substitute* "Makefile"
+             (("^VERSION.*$") (string-append "VERSION=" version)))
+           ;; We do not need to pass these flags to "install".
+           (substitute* "Makefile"
+             (("-o root -g root") "")) 
+           ;; The prefix is hard-coded in the Makefile, we do not want that.
+           (substitute* "Makefile"
+             (("^prefix.*$") (string-append "prefix=" out "\n")))))
+         %standard-phases)))
+    (inputs `(("perl" ,perl))) ; Needed for the tests.
+    (home-page "http://packages.qa.debian.org/d/datefudge.html")
+    (synopsis "Fake the system date")
+    (description
+     "This program (and preload library) fakes the system date so that
+ programs think the wall clock is ... different.
+
+ The faking is not complete; timestamp on files are not affected in any
+ way.
+
+ This package is useful if you want to test the date handling of your
+ programs without changing the system clock. Examples: Does it handle
+ expired certificates correctly? Does it work on a leap day?")
+    (license gpl2)))
-- 
1.7.10.4