Files
xet-core/api_changes/README.md
Hoyt Koepke 45d38a13a9 Code reorganization towards release of xet cargo package (#693)
This PR is a massive rearrangement of the code base into 5 packages
intended for release on cargo. The directories and corresponding
packages are:

1. xet_runtime/ — compiles into the xet-runtime package. Contains the
runtime, config, and logging management.
2. xet_core_structures/ — compiles into the xet-core-structures package.
Contains core data structures for hashing, shards, and xorbs as well as
internal data structures that depend on these.
3. xet_client/ — compiles into the xet-client package, contains client
code for remotely connecting to the Hugging Face servers.
4. xet_data/ — compiles into the xet-data package, contains the data
processing pipeline: chunking/deduplication, file reconstruction,
clean/smudge operations, and progress tracking.
5. xet_pkg/ — compiles into the hf-xet package, provides the top-level
session-based API for file upload and download with user-facing error
categorization. This is the primary package downstream dependencies
would use. This also contains a single summary error type, XetError,
that translates cleanly into python error types.

In addition, the other tools are: 

- git_xet/ — the git_xet CLI binary crate (location preserved). 
- hf_xet/ -- the hf_xet python package (location preserved).
- simulation/ — the simulation crate for upload scenario benchmarking.
- wasm/ -- the wasm objects. 

The full description — and information for an AI agent to use to update
downstream dependencies — is at
api_changes/update_260309_package_restructure.md.

Summary of moves:

- xet_runtime: became xet_runtime::core inside xet_runtime/.
- utils: became xet_runtime::utils inside xet_runtime/.
- xet_config: became xet_runtime::config inside xet_runtime/.
- xet_logging: became xet_runtime::logging inside xet_runtime/.
- error_printer: became xet_runtime::error_printer inside xet_runtime/.
- file_utils: became xet_runtime::file_utils inside xet_runtime/.
- merklehash: became xet_core_structures::merklehash inside
xet_core_structures/.
- mdb_shard: became xet_core_structures::metadata_shard inside
xet_core_structures/.
- xorb_object: became xet_core_structures::xorb_object inside
xet_core_structures/.
- cas_client: became xet_client::cas_client inside xet_client/.
- hub_client: became xet_client::hub_client inside xet_client/.
- cas_types: became xet_client::cas_types inside xet_client/.
- chunk_cache: became xet_client::chunk_cache inside xet_client/.
- data: became xet_data::processing inside xet_data/.
- deduplication: became xet_data::deduplication inside xet_data/.
- file_reconstruction: became xet_data::file_reconstruction inside
xet_data/.
- progress_tracking: became xet_data::progress_tracking inside
xet_data/.
- xet_session: became xet::xet_session inside xet_pkg/.

- Wasm packages (hf_xet_wasm, hf_xet_thin_wasm): moved from top-level
into wasm/; internal imports updated, public APIs unchanged.
2026-03-11 12:02:38 -07:00

687 B

API changes

This folder contains a record of API changes in main. It's indended for AI agents to read in order to correctly apply merges or update dependencies and PRs.

The updates are listed by date in the form: update_<yymmdd>_<description>.md

When applying a merge, rebase, or downstream update, all AI agents should first scan this folder to understand what relevant information may need to be applied.

When creating a PR that involves an API change potentially requiring downstream updates, an AI agent should create such a file. This file should be humanly readable but contain enough information to correctly apply the needed changes without scanning the code.