From 56bf00b94e98b506aaaf5c985573e1ff4326d5db Mon Sep 17 00:00:00 2001
From: Ricardo Wurmus <rekado@elephly.net>
Date: Sat, 7 Mar 2020 19:29:29 +0100
Subject: gnu: r-viridis: Add r-knitr.

* gnu/packages/statistics.scm (r-viridis)[native-inputs]: Add r-knitr.
---
 gnu/packages/statistics.scm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gnu/packages/statistics.scm b/gnu/packages/statistics.scm
index cdf080fe4f..1b9ce60efe 100644
--- a/gnu/packages/statistics.scm
+++ b/gnu/packages/statistics.scm
@@ -3607,6 +3607,8 @@ memory usage.")
      `(("r-ggplot2" ,r-ggplot2)
        ("r-gridextra" ,r-gridextra)
        ("r-viridislite" ,r-viridislite)))
+    (native-inputs
+     `(("r-knitr" ,r-knitr))) ; for vignettes
     (home-page "https://github.com/sjmgarnier/viridis")
     (synopsis "Matplotlib default color map")
     (description
-- 
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