[rpms/kig] epel10: enable Python 3 support, drop Python 2 support where it was enabled

[Kevin Kofler <Kevin@tigcc.ticalc.org>]

            A new commit has been pushed.

            Repo   : rpms/kig
            Branch : epel10
            Commit : 9de46976840965384f41684a0f63e41f6531168e
            Author : Kevin Kofler <Kevin@tigcc.ticalc.org>
            Date   : 2019-10-29T14:07:31+01:00
            Stats  : +44/-12 in 2 file(s)
            URL    : https://src.fedoraproject.org/rpms/kig/c/9de46976840965384f41684a0f63e41f6531168e?branch=epel10

            Log:
            enable Python 3 support, drop Python 2 support where it was enabled

* Tue Oct 29 2019 Kevin Kofler <Kevin@tigcc.ticalc.org> - 19.08.1-3
- enable Python 3 support, drop Python 2 support where it was enabled

Note that F30 shipped without Python support at all because the
"temporary workaround" was never dropped, so this is not an
incompatible change there.

As for F29, it is only 1 month away from its EOL, so I would just not
upgrade kig there at all at this point. (It currently has 18.12.2.)

---
diff --git a/kig-19.08.1-python3.patch b/kig-19.08.1-python3.patch
new file mode 100644
index 0000000..d6554d6
--- /dev/null
+++ b/kig-19.08.1-python3.patch
@@ -0,0 +1,28 @@
+From c0aa768f28219ce8b3c275a6d13ad69757e3c7af Mon Sep 17 00:00:00 2001
+From: Yuri Chornoivan <yurchor@ukr.net>
+Date: Tue, 22 Oct 2019 20:42:51 +0300
+Subject: Try to fix Python 3 build
+
+---
+ scripting/python_scripter.cc | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/scripting/python_scripter.cc b/scripting/python_scripter.cc
+index e60a90c..62a7409 100644
+--- a/scripting/python_scripter.cc
++++ b/scripting/python_scripter.cc
+@@ -390,7 +390,11 @@ PythonScripter::PythonScripter()
+   // the newstring stuff is to prevent warnings about conversion from
+   // const char* to char*..
+   char* s = newstring( "kig" );
++#if PY_VERSION_HEX >= 0x03000000
++  PyImport_AppendInittab( s, PyInit_kig );
++#else
+   PyImport_AppendInittab( s, initkig );
++#endif
+   //  we can't delete this yet, since python keeps a pointer to it..
+   // This means we have a small but harmless memory leak here, but it
+   // doesn't hurt at all, since it could only be freed at the end of
+-- 
+cgit v1.1
+

diff --git a/kig.spec b/kig.spec
index a2bf16e..96d06e9 100644
--- a/kig.spec
+++ b/kig.spec
@@ -2,7 +2,7 @@
 Name:    kig
 Summary: Interactive Geometry 
 Version: 19.08.1
-Release: 2%{?dist}
+Release: 3%{?dist}
 
 License: GPLv2+
 URL:     https://cgit.kde.org/%{name}.git
@@ -21,14 +21,15 @@ Source0: http://download.kde.org/%{stable}/applications/%{version}/src/%{name}-%
 # https://git.reviewboard.kde.org/r/126549/
 Patch1: 0001-explicitly-use-QLibrary-to-load-libpython-like-pykde.patch
 
+# upstream patches
+# fix build with Python 3
+# https://commits.kde.org/kig/c0aa768f28219ce8b3c275a6d13ad69757e3c7af
+Patch100: kig-19.08.1-python3.patch
+
 BuildRequires: boost-devel
-%if 0%{?fedora} > 28 && 0%{?fedora} < 30
-# requires newer/fixed FindBoost.cmake
-%global boost 1
-BuildRequires: boost-python2-devel
-%endif
-BuildRequires: python2
-BuildRequires: python2-rpm-macros
+BuildRequires: boost-python3-devel
+BuildRequires: python3
+BuildRequires: python3-rpm-macros
 
 BuildRequires: desktop-file-utils
 BuildRequires: gettext
@@ -62,14 +63,16 @@ Conflicts: kdeedu-math < 4.7.0-10
 %prep
 %autosetup -p1
 
-sed -ie "s|^#!/usr/bin/env python|#!%{__python2}|" pykig/pykig.py
+sed -ie "s|^#!/usr/bin/env python|#!%{__python3}|" pykig/pykig.py
 
 
 %build
 mkdir %{_target_platform}
 pushd %{_target_platform}
 %{cmake_kf5} .. \
-  -DPYTHON_EXECUTABLE:PATH=%{__python2}
+  -DPYTHON_EXECUTABLE:PATH=%{__python3} \
+  -DPYTHON_INCLUDE_DIR=%{_includedir}/python%{python3_version}m \
+  -DPYTHON_LIBRARY=%{_libdir}/libpython%{python3_version}m.so
 popd
 
 %make_build -C %{_target_platform}
@@ -102,13 +105,14 @@ desktop-file-validate %{buildroot}%{_kf5_datadir}/applications/org.kde.%{name}.d
 %{_kf5_datadir}/kxmlgui5/%{name}/
 #{_kf5_datadir}/sounds/%{name}*
 %{_kf5_qtplugindir}/kigpart.so
-%if 0%{?boost}
 %{_kf5_datadir}/katepart5/syntax/python-kig.xml
-%endif
 %{_mandir}/man1/kig.1*
 
 
 %changelog
+* Tue Oct 29 2019 Kevin Kofler <Kevin@tigcc.ticalc.org> - 19.08.1-3
+- enable Python 3 support, drop Python 2 support where it was enabled
+
 * Sat Oct 19 2019 Kevin Kofler <Kevin@tigcc.ticalc.org> - 19.08.1-2
 - rebuild in Rawhide after unretirement