From 2596099c257b0be5ad5cb24e98aaa1d73c3d7a55 Mon Sep 17 00:00:00 2001
From: Maxim Cournoyer <maxim.cournoyer@gmail.com>
Date: Mon, 28 Dec 2020 16:52:54 -0500
Subject: gnu: Add docbook-sgml-3.1.

* gnu/packages/docbook.scm (docbook-sgml-3.1): New variable.
---
 gnu/packages/docbook.scm | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'gnu')

diff --git a/gnu/packages/docbook.scm b/gnu/packages/docbook.scm
index e248f62b6b..889bb96010 100644
--- a/gnu/packages/docbook.scm
+++ b/gnu/packages/docbook.scm
@@ -336,6 +336,18 @@ by no means limited to these applications.)  This package provides XML DTDs.")
     (description "This package provides SGML style sheets for DocBook.")
     (license (x11-style "" "See file headers."))))
 
+(define-public docbook-sgml-3.1
+  (package
+    (inherit docbook-sgml)
+    (version "3.1")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://www.oasis-open.org/docbook/sgml/"
+                                  version "/docbk31.zip"))
+              (sha256
+               (base32
+                "0f25ch7bywwhdxb1qa0hl28mgq1blqdap3rxzamm585rf4kis9i0"))))))
+
 ;;; Private package referenced by docbook-sgml.
 (define iso-8879-entities
   (package
-- 
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