gguf_new_metadata.py reads data from reader.
Reader doesn't byteswap tensors to native endianness.
But writer does expect tensors in native endianness to convert them
into requested endianness.
There are two ways to fix this: update reader and do conversion to native endianness and back,
or skip converting endianness in writer in this particular USE-case.
gguf_editor_gui.py doesn't allow editing or viewing tensor data.
Let's go with skipping excessive byteswapping.
If eventually capability to view or edit tensor data is added,
tensor data should be instead byteswapped when reading it.
The bug caused a crash upon load with venvs created with
--system-site-packages to use
python3-pyside6.qtwidgets=python3-pyside6.qtwidgets=6.6.2-4
from Kubuntu 24.10.
Aleksei Nikiforov
Sigbjørn Skjæret
Daniel Tang
Chris Thompson