graphics/Blender: Patch for python3.7

Signed-off-by: Christoph Willing <chris.willing@linux.com>

graphics/Blender/Blender.SlackBuild

@@ -26,7 +26,7 @@ SRCNAM=blender
 PKGNAM=Blender
 VERSION=${VERSION:-2.79b}
 BASE_VERSION=${BASE_VERSION:-$( echo $VERSION | sed -e 's/[^0-9.]*//g')}
-BUILD=${BUILD:-1}
+BUILD=${BUILD:-2}
 TAG=${TAG:-_SBo}
 PYTHON_VERSION=$(python3 -c "import sys; print(sys.version[:3])")
 
@@ -74,6 +74,7 @@ find -L . \
 
 patch -p0 < $CWD/buildinfo-$VERSION.diff
 patch -p1 < $CWD/use-libopenmj2-for-openjpeg.diff
+patch -p1 < $CWD/PyRNA-python3.7.diff
 
 mkdir -p build
 cd build
@@ -87,7 +88,7 @@ cd build
     -DWITH_OPENCOLLADA:BOOL=ON \
     -DWITH_OPENCOLORIO:BOOL=ON \
     -DPYTHON_VERSION=$PYTHON_VERSION \
-    -DWITH_PYTHON_INSTALL:BOOL=ON \
+    -DWITH_PYTHON_INSTALL:BOOL=OFF \
     -DWITH_PYTHON_INSTALL_NUMPY:BOOL=ON \
     -DWITH_CODEC_FFMPEG:BOOL=ON \
     -DWITH_OPENAL:BOOL=ON \
@@ -120,7 +121,7 @@ for bin in $BLENDERBINS ; do
   mv $PKG/usr/bin/$bin $PKG/usr/bin/$bin.bin
   cat <<EOF >$PKG/usr/bin/$bin
 #!/bin/sh
-export PYTHONPATH=/usr/share/$SRCNAM/$BASE_VERSION/python/lib$LIBDIRSUFFIX/python$PYTHON_VERSION
+#export PYTHONPATH=/usr/share/$SRCNAM/$BASE_VERSION/python/lib$LIBDIRSUFFIX/python$PYTHON_VERSION
 export LD_LIBRARY_PATH=/usr/lib$LIBDIRSUFFIX/opencollada
 exec $bin.bin "\$@"
 EOF

graphics/Blender/PyRNA-python3.7.diff

@@ -0,0 +1,35 @@
+commit 1db47a2ccd1e68994bf8140eba6cc2a26a2bc91f
+Author: Campbell Barton <ideasman42@gmail.com>
+Date:   Thu Jul 12 08:28:06 2018 +0200
+
+    Fix PyRNA class registration w/ Python 3.7
+    
+    In Python3.7 this now raises an error.
+
+diff --git a/source/blender/python/intern/bpy_rna.c b/source/blender/python/intern/bpy_rna.c
+index 9052b6f580a..80b0aa7a51b 100644
+--- a/source/blender/python/intern/bpy_rna.c
++++ b/source/blender/python/intern/bpy_rna.c
+@@ -7577,10 +7577,12 @@ static int bpy_class_validate_recursive(PointerRNA *dummyptr, StructRNA *srna, v
+ 		if (!(flag & PROP_REGISTER))
+ 			continue;
+ 
++		/* TODO(campbell): Use Python3.7x _PyObject_LookupAttr(), also in the macro below. */
+ 		identifier = RNA_property_identifier(prop);
+ 		item = PyObject_GetAttrString(py_class, identifier);
+ 
+ 		if (item == NULL) {
++			PyErr_Clear();
+ 			/* Sneaky workaround to use the class name as the bl_idname */
+ 
+ #define     BPY_REPLACEMENT_STRING(rna_attr, py_attr)                         \
+@@ -7596,6 +7598,9 @@ static int bpy_class_validate_recursive(PointerRNA *dummyptr, StructRNA *srna, v
+ 					}                                                         \
+ 					Py_DECREF(item);                                          \
+ 				}                                                             \
++				else {                                                        \
++					PyErr_Clear();                                            \
++				}                                                             \
+ 			}  /* intentionally allow else here */
+ 
+ 			if (false) {}  /* needed for macro */