compel 2.3.1 (latest, Nov 2025) declares transformers~=4.25 in its
metadata, i.e. >=4.25,<5.0. After transformers 5.0 (2026-01-26) and
huggingface-hub 1.0 (2025-10-27) shipped, the weekly DEPS_REFRESH
cache rotation in CI started seeing the new majors and pip's resolver
went into multi-hour backtracking storms walking every transformers
4.x candidate against every accelerate/hf-hub/tokenizers combination
to find a set compel would accept. The 2026-04-29 backend-build for
the diffusers backend (darwin-mps + l4t + cublas13-turboquant matrix
cells) hit the GitHub Actions 6h job timeout still inside pip
install — the build itself never started.
compel is the only hard upper bound on transformers in this stack
(diffusers, accelerate, peft, optimum-quanto are all flexible), and
upstream support for transformers 5 is still in flight: damian0815/
compel#129 ("Modernize Compel for Transformers 5") and #128 ("Bump
transformers version to >5.0") are both open as of today.
backend.py only constructs Compel() when COMPEL=1 is set in the env
(default off), so make compel a true optional extra:
- Wrap the top-level `from compel import ...` in try/except
ImportError, mirroring the existing sd_embed pattern.
- Auto-disable COMPEL with a warning when the module isn't
installed, instead of crashing on module load.
- Drop compel from all eight requirements-*.txt variants so the
resolver no longer has to satisfy its transformers cap.
- Leave a TODO in backend.py and in each requirements file
pointing at the upstream PR/issue, so the dependency can be
reinstated once compel supports transformers >= 5.
Users who rely on weighted-prompt embeddings can opt in with a
manual `pip install compel` alongside COMPEL=1; the warning emitted
on startup tells them how.
Assisted-by: Claude:claude-opus-4-7 [Bash Read Edit WebFetch]
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
* add experimental support for sd_embed-style prompt embedding
Signed-off-by: Austen Dicken <cvpcsm@gmail.com>
* add doc equivalent to compel
Signed-off-by: Austen Dicken <cvpcsm@gmail.com>
* need to use flux1 embedding function for flux model
Signed-off-by: Austen Dicken <cvpcsm@gmail.com>
---------
Signed-off-by: Austen Dicken <cvpcsm@gmail.com>
* chore(ci): add cuda13 jobs
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
* Add to pipelines and to capabilities. Start to work on the gallery
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
* gallery
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
* capabilities: try to detect by looking at /usr/local
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
* neutts
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
* backends.yaml
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
* add cuda13 l4t requirements.txt
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
* add cuda13 requirements.txt
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
* Fixups
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
* Fixups
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
* Pin vllm
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
* Not all backends are compatible
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
* add vllm to requirements
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
* vllm is not pre-compiled for cuda 13
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
---------
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
