Support `HF_HOME` and `HF_ENDPOINT`

[DayNice]

Hello, I have noticed that HF_HOME and HF_ENDPOINT environment variables are not supported.

I presume this is because this library uses ApiBuilder::new, not ApiBuilder::from_env for hf_hub::api::sync::ApiBuilder.

Would it be possible to update all constructors from ApiBuilder::new into ApiBuilder::from_env?

1. I noticed this library uses hf-hub crate version 0.4.2
2. This version supports loading HF_HOME and HF_ENDPOINT through ApiBuilder::from_env.
3. A developer commented in this issue that this is an opt-in.

[sonam-pankaj95]

Hi, thank you for brining our attention on this issue.

It would be faster if you make the changes and make a PR, and we would quickly accept it.

[DayNice]

Hi, thank you for brining our attention on this issue.

It would be faster if you make the changes and make a PR, and we would quickly accept it.

My main background is Python, I don't have prior experience in Rust, although I am interested in learning it.

I did try to build and run tests but with little success. I literally can't get past building this project with Maturin 😂, it fails to build even in its original state despite whatever I do.

[sonam-pankaj95]

Hey, we can help you with the error. Because we just did maturin build and it's built.

Can you please once check the env?

Thanks,
Sonam

[DayNice]

I had a break, adjusted my environment, and was able to build the project using the following script.

However I think this only enables basic features. Some pytest tests would not run successfully, requiring additional features from the Rust crate. Am I missing something?

# clone git
git clone https://github.com/StarlightSearch/EmbedAnything.git
cd EmbedAnything

# activate virtual environment
uv venv --python 3.12 --seed
. .venv/bin/activate

# install project, triggers Maturin build
pip install .
# install dev dependency
pip install pytest

Anyway, I searched the Rust source code for ApiBuilder::new, and found these five files.
So before I started editing, I wanted to run both Python and Rust tests related to them.

rust/src/embeddings/local
├── bert.rs
├── clip.rs
├── jina.rs
├── modernbert.rs
└── qwen3.rs

These Python tests run successfully.

pytest -x tests/model_tests/test_bert.py \
  tests/model_tests/test_clip.py \
  tests/model_tests/test_jina.py

However the following Rust test did not.

cargo test embeddings::local::bert \
&& cargo test embeddings::local::clip \
&& cargo test embeddings::local::jina \
&& cargo test embeddings::local::modernbert  \
&& cargo test embeddings::local::qwen3

Specifically, the test for clip fails even in its original state. Is this due to something I missed or something I can ignore?

cargo test embeddings::local::clip
#    Compiling embed_anything v0.6.5 (/home/daynice/repo/EmbedAnything/rust)
#     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.53s
#      Running unittests src/lib.rs (/home/daynice/repo/EmbedAnything/target/debug/deps/embed_anything-9357e31b730d5ea8)

# running 4 tests
# test embeddings::local::clip::tests::test_tokenize_sequences ... FAILED
# test embeddings::local::clip::tests::test_load_images ... ok
# test embeddings::local::clip::tests::test_load_image ... ok
# test embeddings::local::clip::tests::test_embed_image_batch ... ok
# 
# failures:
# 
# ---- embeddings::local::clip::tests::test_tokenize_sequences stdout ----
# 
# thread 'embeddings::local::clip::tests::test_tokenize_sequences' panicked at rust/src/embeddings/local/clip.rs:375:9:
# assertion `left == right` failed
#   left: [2, 77]
#  right: [2, 8]
# note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
# 
# 
# failures:
#     embeddings::local::clip::tests::test_tokenize_sequences
# 
# test result: FAILED. 3 passed; 1 failed; 0 ignored; 0 measured; 17 filtered out; finished in 9.69s
# 
# error: test failed, to rerun pass `--lib`

[sonam-pankaj95]

Thank you for the PR.

This PR #179 addressed this issue.