unsloth/studio
Roland Tannous f91ef8f9b0
fix(studio): lazy-import transformers in model_config to fix 5.x version switch (#4806)
* fix(studio): lazy-import AutoConfig in model_config.py to fix transformers 5.x version switch

Move `from transformers import AutoConfig` from module level to inside
load_model_config() where it is actually used.

model_config.py is transitively imported at module load time via:
  core/inference/__init__ → llama_cpp → utils.models → model_config

In inference subprocesses (mp.spawn), this chain runs before
_activate_transformers_version() can prepend .venv_t5/ to sys.path.
The eager import caches transformers 4.57.6 in sys.modules, and the
subsequent sys.path change has no effect — Python always checks
sys.modules before sys.path.

Making the import lazy ensures transformers is not loaded until after
version activation, so the subprocess picks up the correct version.

* fix(studio): also lazy-import extract_model_size_b in llama_cpp.py

Belt-and-suspenders: make the import that originally triggered the
chain lazy as well, so future module-level AutoConfig additions in
utils.models cannot reintroduce the problem.

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
2026-04-03 02:56:01 +04:00
..
backend fix(studio): lazy-import transformers in model_config to fix 5.x version switch (#4806) 2026-04-03 02:56:01 +04:00
frontend UI Changes (#4782) 2026-04-02 08:05:55 -07:00
__init__.py Final cleanup 2026-03-12 18:28:04 +00:00
install_llama_prebuilt.py fix(studio): suppress fatal error when prebuilt manifest is missing (#4799) 2026-04-02 12:18:11 -07:00
install_python_stack.py studio: unify Windows installer/setup logging style, verbosity controls, and startup messaging (#4651) 2026-03-30 00:53:23 -07:00
LICENSE.AGPL-3.0 Add AGPL-3.0 license to studio folder 2026-03-09 19:36:25 +00:00
setup.bat Final cleanup 2026-03-12 18:28:04 +00:00
setup.ps1 fix(studio): revert llama.cpp default tag to latest (#4797) 2026-04-02 11:52:37 -07:00
setup.sh fix(studio): revert llama.cpp default tag to latest (#4797) 2026-04-02 11:52:37 -07:00
Unsloth_Studio_Colab.ipynb Allow install_python_stack to run on Colab (#4633) 2026-03-27 00:29:27 +04:00