[PATCH 02/19] gnu: Add r-lazyeval.

[Vicente Vera <vicentemvp@gmail.com>]

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From 7996c78eca1549a69cad643730ecc5c2750b53f3 Mon Sep 17 00:00:00 2001
From: Vicente Vera Parra <vicentemvp@gmail.com>
Date: Sun, 13 Sep 2015 13:05:48 -0300
Subject: [PATCH 02/19] gnu: Add r-lazyeval.

* gnu/packages/statistics.scm (r-lazyeval): New variable.
---
 gnu/packages/statistics.scm | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/gnu/packages/statistics.scm b/gnu/packages/statistics.scm
index 9063496..004ecef 100644
--- a/gnu/packages/statistics.scm
+++ b/gnu/packages/statistics.scm
@@ -518,3 +518,20 @@ declare the pre and post conditions that you code should satisfy,
 while also producing friendly error messages so that your users know
 what they've done wrong.")
     (license license:gpl3+)))
+
+(define-public r-lazyeval
+  (package
+    (name "r-lazyeval")
+    (version "0.1.10")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "mirror://cran/src/contrib/lazyeval_"
+                                  version ".tar.gz"))
+              (sha256
+               (base32 "02qfpn2fmy78vx4jxr7g7rhqzcm1kcivfwai7lbh0vvpawia0qwh"))))
+    (build-system r-build-system)
+    (home-page "https://github.com/hadley/lazyeval")
+    (synopsis "Lazy (Non-Standard) Evaluation")
+    (description
+     "A disciplined approach to non-standard evaluation.")
+    (license license:gpl3+)))
-- 
2.5.1