From 45e100f5125ab91d9fcd68f8e43c4b306d24a05d Mon Sep 17 00:00:00 2001
From: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Date: Jan 17 2021 10:58:27 +0000
Subject: Fix build under Python 3.10


---

diff --git a/libsbml-drop-formatter-import.diff b/libsbml-drop-formatter-import.diff
new file mode 100644
index 0000000..ccbc5ff
--- /dev/null
+++ b/libsbml-drop-formatter-import.diff
@@ -0,0 +1,24 @@
+--- libSBML-5.19.0-Source/src/bindings/python/doc-converter/rewrite_pydoc.py~	2020-11-25 12:03:01.000000000 +0100
++++ libSBML-5.19.0-Source/src/bindings/python/doc-converter/rewrite_pydoc.py	2021-01-17 11:55:21.317440267 +0100
+@@ -118,7 +118,6 @@
+ import sys
+ import os
+ import textwrap
+-from formatter import NullWriter, AbstractFormatter
+ try:
+     from htmllib import HTMLParser
+ except Exception:
+@@ -192,12 +191,10 @@
+ # writes all text to an internal string variable.  The contents can be
+ # obtained using a call to get_text().
+ 
+-class RewritePydocStringWriter(NullWriter):
+-
++class RewritePydocStringWriter:
+     def __init__(self, maxcol=72):
+         self.text = ''
+         self.maxcol = maxcol
+-        NullWriter.__init__(self)
+         self.reset()
+ 
+     def reset(self):
diff --git a/libsbml.spec b/libsbml.spec
index a7184a0..742ea37 100644
--- a/libsbml.spec
+++ b/libsbml.spec
@@ -40,7 +40,7 @@ Obsoletes:      libsbml-sharp < 0:5.18.0-20
 
 Name:           libsbml
 Version:        5.19.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Systems Biology Markup Language library
 License:        LGPLv2+
 URL:            http://sbml.org/Software/libSBML
@@ -53,6 +53,9 @@ Patch1:         libsbml-fix_install_libpaths.patch
 Patch2:         time-clock.diff
 Patch3:         lisbml-fix-jsfile-globs.diff
 
+# formatter was dropped in python3.10. It appears the imported code was just a noop.
+Patch4:         libsbml-drop-formatter-import.diff
+
 BuildRequires:  cmake
 BuildRequires:  zlib-devel
 BuildRequires:  bzip2-devel
@@ -407,6 +410,9 @@ popd
 %endif
 
 %changelog
+* Sun Jan 17 2021 Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> - 5.19.0-2
+- Fix build under Python 3.10 (#1913346)
+
 * Thu Jan  7 2021 Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> - 5.19.0-1
 - Update to latest version