01/74: gnu: Add r-ellipsis.

[guix-commits]

rekado pushed a commit to branch master
in repository guix.

commit 3f22a115bd792af0ce8cee9f0723c5f5fada0b2d
Author: Ricardo Wurmus <address@hidden>
Date:   Thu Mar 7 22:05:03 2019 +0100

    gnu: Add r-ellipsis.
    
    * gnu/packages/cran.scm (r-ellipsis): New variable.
---
 gnu/packages/cran.scm | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/gnu/packages/cran.scm b/gnu/packages/cran.scm
index cc23c53..cb7689e 100644
--- a/gnu/packages/cran.scm
+++ b/gnu/packages/cran.scm
@@ -84,6 +84,28 @@
 the system clipboards.")
     (license license:gpl3)))
 
+(define-public r-ellipsis
+  (package
+    (name "r-ellipsis")
+    (version "0.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (cran-uri "ellipsis" version))
+       (sha256
+        (base32
+         "0pw94qpg81xmsdsagpqxddv7m2cmdszmyyq99dk3caqqj01z7wg6"))))
+    (build-system r-build-system)
+    (home-page "https://github.com/hadley/ellipsis";)
+    (synopsis "Tools for working with additional arguments")
+    (description
+     "In S3 generics, it's useful to take @code{...} so that methods can have
+additional arguments.  But this flexibility comes at a cost: misspelled
+arguments will be silently ignored.  The @code{ellipsis} package is an
+experiment that allows a generic to warn if any arguments passed in @code{...}
+are not used.")
+    (license license:gpl3)))
+
 (define-public r-sys
   (package
     (name "r-sys")