python3-pivy: fix and rebuild for Python 3.8.

srcpkgs/python3-pivy/patches/73cd928f.patch

@@ -0,0 +1,36 @@
+From 73cd928fe1a9c2abbe6f28844a7fc695ad11d7cf Mon Sep 17 00:00:00 2001
+From: Peter Lama <peterldev94@gmail.com>
+Date: Fri, 24 Aug 2018 17:25:47 -0700
+Subject: [PATCH] Fix issue #39: PyUnicode_AsUTF8 returns const char*
+
+Even with python 2, it doesn't seem like char* is needed
+
+--- Inventor/nodes/SoMarkerSet.i
++++ Inventor/nodes/SoMarkerSet.i
+@@ -5,7 +5,7 @@
+         short WIDTH, HEIGHT;
+         size.getValue(WIDTH, HEIGHT);
+         short BYTEWIDTH = (WIDTH + 7) / 2;
+-        char* coin_marker;
++        const char* coin_marker;
+ #ifdef PY_2
+         if (PyString_Check(string))
+         {
+@@ -49,4 +49,4 @@
+         delete[] bitmapbytes;
+         bitmapbytes = NULL;
+     }
+-}
+\ No newline at end of file
++}
+--- Inventor/sensors/SoSensor.i
++++ Inventor/sensors/SoSensor.i
+@@ -4,7 +4,7 @@ SoSensorPythonCB(void * data, SoSensor * sensor)
+ {
+   PyGILState_STATE gil = PyGILState_Ensure();
+   swig_type_info * swig_type = 0;
+-  char * sensor_cast_name = NULL;
++  const char * sensor_cast_name = NULL;
+   PyObject * func, * arglist;
+   PyObject * result, * pysensor;
+ 

srcpkgs/python3-pivy/template

@@ -1,7 +1,7 @@
 # Template file for 'python3-pivy'
 pkgname=python3-pivy
 version=0.6.4
-revision=1
+revision=2
 wrksrc="Coin3D-${pkgname#python3-}-a84100beff22"
 build_style=python3-module
 pycompile_module="pivy"