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Caused by rBa5c59fb90ef9. Since Group Input and Output sockets happen to be of type `SOCK_CUSTOM` [and since rBa5c59fb90ef9 custom py defined sockets are too :)] a check introduced in rB513066e8ad6f that prevents connections for `SOCK_CUSTOM` triggered. Now refine the check, so it specifically looks for NODE_GROUP_INPUT / NODE_GROUP_OUTPUT, too (this keeps the intention intact to not connect group inputs to group outputs and vice versa, but allows custom py defined sockets to connect again) and put it in new utility function. Maniphest Tasks: T94827 Differential Revision: https://developer.blender.org/D13817
.. Keep this document short & concise, linking to external resources instead of including content in-line. See 'release/text/readme.html' for the end user read-me. Blender ======= Blender is the free and open source 3D creation suite. It supports the entirety of the 3D pipeline-modeling, rigging, animation, simulation, rendering, compositing, motion tracking and video editing. .. figure:: https://code.blender.org/wp-content/uploads/2018/12/springrg.jpg :scale: 50 % :align: center Project Pages ------------- - `Main Website <http://www.blender.org>`__ - `Reference Manual <https://docs.blender.org/manual/en/latest/index.html>`__ - `User Community <https://www.blender.org/community/>`__ Development ----------- - `Build Instructions <https://wiki.blender.org/wiki/Building_Blender>`__ - `Code Review & Bug Tracker <https://developer.blender.org>`__ - `Developer Forum <https://devtalk.blender.org>`__ - `Developer Documentation <https://wiki.blender.org>`__ License ------- Blender as a whole is licensed under the GNU General Public License, Version 3. Individual files may have a different, but compatible license. See `blender.org/about/license <https://www.blender.org/about/license>`__ for details.