branch master updated: gnu: Add mscgen.

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     new 5697317  gnu: Add mscgen.
5697317 is described below

commit 56973172c9a8744637d6506bdff485cd27ff9791
Author: Alexander Krotov <address@hidden>
AuthorDate: Tue Feb 11 11:33:13 2020 -0500

    gnu: Add mscgen.
    
    * gnu/packages/graph.scm (mscgen): New variable.
    
    Signed-off-by: Leo Famulari <address@hidden>
---
 gnu/packages/graph.scm | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/gnu/packages/graph.scm b/gnu/packages/graph.scm
index 982def6..7b51a4f 100644
--- a/gnu/packages/graph.scm
+++ b/gnu/packages/graph.scm
@@ -4,6 +4,7 @@
 ;;; Copyright © 2018 Tobias Geerinckx-Rice <address@hidden>
 ;;; Copyright © 2019 Efraim Flashner <address@hidden>
 ;;; Copyright © 2019 Andreas Enge <address@hidden>
+;;; Copyright © 2020 Alexander Krotov <address@hidden>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -38,6 +39,7 @@
   #:use-module (gnu packages check)
   #:use-module (gnu packages compression)
   #:use-module (gnu packages cran)
+  #:use-module (gnu packages gd)
   #:use-module (gnu packages graphviz)
   #:use-module (gnu packages maths)
   #:use-module (gnu packages multiprecision)
@@ -501,3 +503,30 @@ isolating planarity obstructions.")
     (description "rw computes rank-width and rank-decompositions
 of graphs.")
     (license license:gpl2+)))
+
+(define-public mscgen
+  (package
+    (name "mscgen")
+    (version "0.20")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append 
"http://www.mcternan.me.uk/mscgen/software/mscgen-src-";
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "08yw3maxhn5fl1lff81gmcrpa4j9aas4mmby1g9w5qcr0np82d1w"))))
+    (build-system gnu-build-system)
+    (inputs
+     `(("gd" ,gd)))
+    (home-page "http://www.mcternan.me.uk/mscgen/";)
+    (synopsis "Message Sequence Chart Generator")
+    (description "Mscgen is a small program that parses Message Sequence Chart
+descriptions and produces PNG, SVG, EPS or server side image maps (ismaps) as
+the output.  Message Sequence Charts (MSCs) are a way of representing entities
+and interactions over some time period and are often used in combination with
+SDL.  MSCs are popular in Telecoms to specify how protocols operate although
+MSCs need not be complicated to create or use.  Mscgen aims to provide a simple
+text language that is clear to create, edit and understand, which can also be
+transformed into common image formats for display or printing.")
+    (license license:gpl2+)))