Fixes <https://bugs.gnu.org/33882>. * gnu/packages/graphics.scm (blender-2.79): New variable. (blender)[description]: Remove obsolete claim that the stable release no longer works in Guix. * gnu/packages/patches/blender-2.79-newer-ffmpeg.patch, gnu/packages/patches/blender-2.79-python-3.7-fix.patch: New files. * gnu/local.mk (dist_patch_DATA): Add them.
		
			
				
	
	
		
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Copied from https://git.blender.org/gitweb/gitweb.cgi/blender.git/patch/1db47a2ccd1e68994bf8140eba6cc2a26a2bc91f
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Fixes <https://bugs.gnu.org/33608>.
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From 1db47a2ccd1e68994bf8140eba6cc2a26a2bc91f Mon Sep 17 00:00:00 2001
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From: Campbell Barton <ideasman42@gmail.com>
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Date: Thu, 12 Jul 2018 08:28:06 +0200
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Subject: [PATCH] Fix PyRNA class registration w/ Python 3.7
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In Python3.7 this now raises an error.
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---
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 source/blender/python/intern/bpy_rna.c | 5 +++++
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 1 file changed, 5 insertions(+)
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diff --git a/source/blender/python/intern/bpy_rna.c b/source/blender/python/intern/bpy_rna.c
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index 9052b6f580a..80b0aa7a51b 100644
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--- a/source/blender/python/intern/bpy_rna.c
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+++ b/source/blender/python/intern/bpy_rna.c
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@@ -7577,10 +7577,12 @@ static int bpy_class_validate_recursive(PointerRNA *dummyptr, StructRNA *srna, v
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 		if (!(flag & PROP_REGISTER))
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 			continue;
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+		/* TODO(campbell): Use Python3.7x _PyObject_LookupAttr(), also in the macro below. */
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 		identifier = RNA_property_identifier(prop);
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 		item = PyObject_GetAttrString(py_class, identifier);
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 		if (item == NULL) {
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+			PyErr_Clear();
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 			/* Sneaky workaround to use the class name as the bl_idname */
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 #define     BPY_REPLACEMENT_STRING(rna_attr, py_attr)                         \
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@@ -7596,6 +7598,9 @@ static int bpy_class_validate_recursive(PointerRNA *dummyptr, StructRNA *srna, v
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 					}                                                         \
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 					Py_DECREF(item);                                          \
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 				}                                                             \
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+				else {                                                        \
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+					PyErr_Clear();                                            \
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+				}                                                             \
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 			}  /* intentionally allow else here */
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 			if (false) {}  /* needed for macro */
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-- 
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2.20.1
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