guix/gnu/packages/patches/blender-2.79-python-3.7-fix.patch

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Copied from https://git.blender.org/gitweb/gitweb.cgi/blender.git/patch/1db47a2ccd1e68994bf8140eba6cc2a26a2bc91f
Fixes <https://bugs.gnu.org/33608>.
From 1db47a2ccd1e68994bf8140eba6cc2a26a2bc91f Mon Sep 17 00:00:00 2001
From: Campbell Barton <ideasman42@gmail.com>
Date: Thu, 12 Jul 2018 08:28:06 +0200
Subject: [PATCH] Fix PyRNA class registration w/ Python 3.7
In Python3.7 this now raises an error.
---
source/blender/python/intern/bpy_rna.c | 5 +++++
1 file changed, 5 insertions(+)
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 */
--
2.20.1