Handle 'isolated islands' of cyclic dependencies of effectively unused data-blocks in 'Recursive cleanup' code #98029

New Issue

Germano Cavalcante · 2022-05-11T01:32:34+02:00

2022-05-11 01:32:34 +02:00

Blender Version
Broken: 3.3-
Worked: Never

Short description of error
As stated by @mont29 in #96047#1315978, dependency cycles should be handled by the recursive purge feature (File -> Clean Up -> Recursive Unused Data-Blocks menu entry).
But sometimes, recursive cleanup do not remove cyclic dependencies.
2022-03-02_21-40-17.mp4

In #96047, @mont29 wrote:
... since they are both user-referencing each other... Well then, nothing else but manual deletion in those cases I guess :|

Although I don't think nodegroups should user-reference Objects, but that's for #geometry_nodes team to decide & handle.

Exact steps for others to reproduce the error

Open attached .blend file
Note when inspecting the Blender File that there are 1 Object (1 User), 1 Mesh (1 User) and 1 Material (1 User), even though they are not being used.
This happens because the Object is being referenced by the Material and the Material is being referenced by the Object.
untitled.blend

**Blender Version** Broken: 3.3- Worked: Never **Short description of error** As stated by @mont29 in #96047#1315978, dependency cycles should be handled by the recursive purge feature (`File -> Clean Up -> Recursive Unused Data-Blocks` menu entry). But sometimes, recursive cleanup do not remove cyclic dependencies. [2022-03-02_21-40-17.mp4](https://archive.blender.org/developer/F12894677/2022-03-02_21-40-17.mp4) > In #96047, @mont29 wrote: > ... since they are both user-referencing each other... Well then, nothing else but manual deletion in those cases I guess :| > > Although I don't think nodegroups should user-reference Objects, but that's for #geometry_nodes team to decide & handle. **Exact steps for others to reproduce the error** - Open attached .blend file - Note when inspecting the Blender File that there are 1 Object (1 User), 1 Mesh (1 User) and 1 Material (1 User), even though they are not being used. This happens because the Object is being referenced by the Material and the Material is being referenced by the Object. [untitled.blend](https://archive.blender.org/developer/F12894678/untitled.blend)

Germano Cavalcante commented

2022-05-11 01:32:34 +02:00

Added subscribers: @mont29, @mano-wii

blender-admin commented

2022-05-11 01:32:34 +02:00

#96047 was marked as duplicate of this issue

Germano Cavalcante commented

2022-05-11 01:33:26 +02:00

Changed status from 'Needs Triage' to: 'Confirmed'

Germano Cavalcante commented

2022-05-11 01:35:43 +02:00

Added subscribers: @Vyach, @cmbasnett

Bastien Montagne commented

2022-05-11 10:24:38 +02:00

This is even more of a known TODO than a known issue...

Bastien Montagne changed title from ~~'Recursive cleanup' does not remove cyclic dependencies~~ to Handle 'isolated islands' of cyclic dependencies of effectively unused data-blocks in 'Recursive cleanup' code

2022-05-11 10:25:37 +02:00

blender-admin commented

2022-07-07 12:33:45 +02:00

This issue was referenced by 97dd107070

This issue was referenced by 97dd10707097536df24dd7ca7d2a45b9a6408711

Bastien Montagne commented

2022-07-07 13:01:22 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Bastien Montagne closed this issue

2022-07-07 13:01:22 +02:00

Bastien Montagne self-assigned this 2022-07-07 13:01:22 +02:00

Bastien Montagne referenced this issue from a commit