Hi,

Malte Frank Gerdes <malte.f.gerdes@gmail.com> writes:

> i have a similar error. I'm using Blender 2.83.5 in a environment
> created with guix environment --ad-hoc --no-grafts (as suggested). In a
> new scene (right after startup not loading anything) selecting the cube
> and trying to apply a Remesh Modifier Blender crashes and generates
> this backtrace:
>
> # Blender 2.83.5, Unknown revision
> bpy.context.space_data.context = 'MODIFIER'  # Property
> bpy.ops.object.modifier_add(type='REMESH')  # Operator
>
> # backtrace
> blender(BLI_system_backtrace+0x20) [0x293ba30]
> blender() [0xa99e13]
> /gnu/store/fa6wj5bxkj5ll1d7292a70knmyl7a0cr-glibc-2.31/lib/libc.so.6(+0x36b20) [0x7f67bd83ab20]
> blender(BKE_mesh_copy_settings+0x13) [0xafd993]
> blender() [0xdfad4f]
> blender() [0xbbc7b3]
> blender() [0xbbd2b4]
> blender(makeDerivedMesh+0x8f) [0xbbe81f]
> blender(BKE_object_handle_data_update+0x3b0) [0xb34540]
> blender(BKE_object_eval_uber_data+0x2e) [0xb3486e]
> blender() [0x133ab5b]
> blender() [0x133ad19]
> blender(BLI_task_pool_work_and_wait+0x1d5) [0x293c8d5]
> blender(_ZN3DEG23deg_evaluate_on_refreshEPNS_9DepsgraphE+0x201) [0x133b0f1]
> blender(DEG_evaluate_on_refresh+0x65) [0x131f165]
> blender() [0xb6dd6b]
> blender(wm_event_do_depsgraph+0xb3) [0xc58d03]
> blender(wm_event_do_refresh_wm_and_depsgraph+0x87) [0xc58e57]
> blender(wm_event_do_notifiers+0x45b) [0xc5f6ab]
> blender(WM_main+0x28) [0xc552a8]
> blender(main+0x2cc) [0xa68f8c]
> /gnu/store/fa6wj5bxkj5ll1d7292a70knmyl7a0cr-glibc-2.31/lib/libc.so.6(__libc_start_main+0xed) [0x7f67bd826a6d]
> blender(_start+0x2a) [0xa967fa]

This looks like an unrelated bug, but of course one that should be
investigated in its own right.  Could you resend it to bug-guix@gnu.org
with a suitable subject line, to create a new ticket for it?

      Thanks!
        Mark