[PATCH] Add r-data.table (plus single dependency)

[Vicente Vera <vicentemvp@gmail.com>]

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Hello,

Here are two patches that add R packages data.table and chron.

Hope both synopsis and descriptions are OK!

Thank you for everything.

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From 27c21038d0a23910ad3bc176c402a39008089049 Mon Sep 17 00:00:00 2001
From: Vicente Vera Parra <vicentemvp@gmail.com>
Date: Sat, 26 Sep 2015 23:54:08 -0300
Subject: [PATCH 1/2] gnu: Add r-chron.

* gnu/packages/statistics.scm (r-chron): New variable.
---
 gnu/packages/statistics.scm | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/gnu/packages/statistics.scm b/gnu/packages/statistics.scm
index cbcef49..f26b7ff 100644
--- a/gnu/packages/statistics.scm
+++ b/gnu/packages/statistics.scm
@@ -894,3 +894,21 @@ pieces of code in C++; 3) use the same code interface to work with data no
 matter where it is stored, whether in a data frame, a data table or
 database.")
     (license license:expat)))
+
+(define-public r-chron
+  (package
+    (name "r-chron")
+    (version "2.3-47")
+    (source (origin
+              (method url-fetch)
+              (uri (cran-uri "chron" version))
+              (sha256
+               (base32
+                "1xj50kk8b8mbjpszp8i0wbripb5a4b36jcscwlbyap8n4487g34s"))))
+    (build-system r-build-system)
+    (home-page "http://cran.r-project.org/web/packages/chron")
+    (synopsis "Chronological R objects which can handle dates and times")
+    (description
+     "This package provides chronological R objects which can handle dates and
+times.")
+    (license license:gpl2)))
-- 
2.5.3


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From 1b6f733edf83188d25ee3f19d510498e393c4432 Mon Sep 17 00:00:00 2001
From: Vicente Vera Parra <vicentemvp@gmail.com>
Date: Sat, 26 Sep 2015 23:56:04 -0300
Subject: [PATCH 2/2] gnu: Add r-data.table.

* gnu/packages/statistics.scm (r-data.table): New variable.
---
 gnu/packages/statistics.scm | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/gnu/packages/statistics.scm b/gnu/packages/statistics.scm
index f26b7ff..f854a44 100644
--- a/gnu/packages/statistics.scm
+++ b/gnu/packages/statistics.scm
@@ -912,3 +912,24 @@ database.")
      "This package provides chronological R objects which can handle dates and
 times.")
     (license license:gpl2)))
+
+(define-public r-data.table
+  (package
+    (name "r-data.table")
+    (version "1.9.6")
+    (source (origin
+              (method url-fetch)
+              (uri (cran-uri "data.table" version))
+              (sha256
+               (base32
+                "0vi3zplpxqbg78z9ifjfs1kl2i8qhkqxr7l9ysp2663kq54w6x3g"))))
+    (build-system r-build-system)
+    (propagated-inputs
+     `(("r-chron" ,r-chron)))
+    (home-page "https://github.com/Rdatatable/data.table/wiki")
+    (synopsis "Enhanced version of data.frame R object")
+    (description
+     "The R data.table package provides functions for fast aggregation of
+large data (e.g. 100GB in RAM), fast ordered joins, fast add/modify/delete of
+columns by group, column listing and fast file reading.")
+    (license license:gpl2+)))
-- 
2.5.3