gnu: Add youplot.

* gnu/packages/plotutils.scm (youplot): New variable.

Signed-off-by: Nicolas Goaziou <mail@nicolasgoaziou.fr>

gnu/packages/plotutils.scm

@@ -456,3 +456,29 @@ characters.  Supported charts are: barplot, boxplot, densityplot,
 histogram, lineplot, and scatterplot.")
     (home-page "https://github.com/red-data-tools/unicode_plot.rb")
     (license license:expat)))
+
+(define-public youplot
+  (package
+    (name "youplot")
+    (version "0.4.5")
+    ;; Source at RubyGems.org doesn't have tests.
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/red-data-tools/YouPlot")
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "1y54apw7hx9mhjnf277w9wayvq954mdnip4dpajhc0qjg2464c2b"))))
+    (build-system ruby-build-system)
+    (native-inputs (list ruby-rake ruby-simplecov ruby-test-unit))
+    (propagated-inputs (list ruby-unicode-plot))
+    (synopsis "Command line tool that draw plots on the terminal")
+    (description
+     "YouPlot is a command line tool that draws plots on the terminal,
+powered by UnicodePlot gem.  It provides commands @command{youplot}
+and @command{uplot} (shorthand) are provided, and supports chart types
+of barplot, histogram, lineplot, scatter, density, boxplot, and count.")
+    (home-page "https://github.com/red-data-tools/YouPlot")
+    (license license:expat)))