hg_cpp

A clean-slate, C++-first implementation of the hgraph functional-reactive time-series runtime. The C++ runtime is the source of truth. Python provides wiring compatibility and supports Python-authored nodes running inside that runtime.

Python release candidate

Release candidates are published under the hg_cpp distribution name:

python -m pip install hg_cpp==0.4.0rc1

The distribution exposes the hgraph import package and the native _hgraph extension. Install it in an isolated environment rather than alongside the main hgraph distribution, since both provide the same Python import namespace. One wheel per supported platform covers CPython 3.12 and later through the CPython stable ABI. The supported Python and platform policy is recorded in docs/source/developer_guide/release_readiness.rst.

Build & test

cmake -S . -B build                 # configure (fmt + Catch2 fetched if absent)
cmake --build build -j              # build hgraph_core + tests
ctest --test-dir build --output-on-failure

Requires a C++23 compiler and CMake >= 3.25. Python/nanobind are not needed for the default build (bindings are opt-in via -DHGRAPH_BUILD_PYTHON_BINDINGS=ON).

Documentation

Sphinx docs live under docs/source (uv sync --extra docs, then uv run sphinx-build -W -b html docs/source docs/_build/html):

User guide — start at docs/source/user_guide/quick_start.rst, then the authoring/testing guides for nodes, graphs, and the eval_node harness.
Developer guide — the authoritative design records (docs/source/developer_guide/): architecture, data structures, wiring, nested graphs, mesh, services, error handling, operators, roadmap.

Contributing / AI sessions

AGENTS.md — canonical project direction: goals, build philosophy, source layout, dependency policy, git hygiene.
CLAUDE.md — the operational working guide: the enforced design-first workflow (docs change in the same commit as code), guardrails, architecture map, and current state.
The read-only ext/main tree is the canonical Python hgraph reference.

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

hg_cpp-0.4.1.tar.gz (2.0 MB view details)

Uploaded Jul 20, 2026 Source

Built Distributions

If you're not sure about the file name format, learn more about wheel file names.

The dropdown lists show the available interpreters, ABIs, and platforms. Enable javascript to be able to filter the list of wheel files.

hg_cpp-0.4.1-cp312-abi3-win_amd64.whl (52.0 MB view details)

Uploaded Jul 20, 2026 CPython 3.12+Windows x86-64

hg_cpp-0.4.1-cp312-abi3-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl (17.0 MB view details)

Uploaded Jul 20, 2026 CPython 3.12+manylinux: glibc 2.27+ x86-64manylinux: glibc 2.28+ x86-64

hg_cpp-0.4.1-cp312-abi3-macosx_15_0_arm64.whl (14.7 MB view details)

Uploaded Jul 20, 2026 CPython 3.12+macOS 15.0+ ARM64

File details

Details for the file hg_cpp-0.4.1.tar.gz.

File metadata

Download URL: hg_cpp-0.4.1.tar.gz
Upload date: Jul 20, 2026
Size: 2.0 MB
Tags: Source
Uploaded using Trusted Publishing? Yes
Uploaded via: twine/6.1.0 CPython/3.13.14

File hashes

Hashes for hg_cpp-0.4.1.tar.gz
Algorithm	Hash digest
SHA256	`d3fb1a38b3b6b2d129d7d78403a6fd0daec871e695183cc706ca7ba097ec6813`
MD5	`43b498fb82498977592caedaf496955c`
BLAKE2b-256	`34aa342141f4748f6957656ab024b85a3252098e66e12039d6b87457d6161769`

See more details on using hashes here.

Provenance

The following attestation bundles were made for hg_cpp-0.4.1.tar.gz:

Publisher: build.yml on hhenson/hg_cpp

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

Statement:
- Statement type: https://in-toto.io/Statement/v1
- Predicate type: https://docs.pypi.org/attestations/publish/v1
- Subject name: hg_cpp-0.4.1.tar.gz
- Subject digest: d3fb1a38b3b6b2d129d7d78403a6fd0daec871e695183cc706ca7ba097ec6813
- Sigstore transparency entry: 2206296846
- Sigstore integration time: Jul 20, 2026
Source repository:
- Permalink: hhenson/hg_cpp@f1f4b4ba8c7c065870ec2c3ee2526b294313c238
- Branch / Tag: refs/tags/v_0.4.1
- Owner: https://github.com/hhenson
- Access: public
Publication detail:
- Token Issuer: https://token.actions.githubusercontent.com
- Runner Environment: github-hosted
- Publication workflow: build.yml@f1f4b4ba8c7c065870ec2c3ee2526b294313c238
- Trigger Event: push

File details

Details for the file hg_cpp-0.4.1-cp312-abi3-win_amd64.whl.

File metadata

Download URL: hg_cpp-0.4.1-cp312-abi3-win_amd64.whl
Upload date: Jul 20, 2026
Size: 52.0 MB
Tags: CPython 3.12+, Windows x86-64
Uploaded using Trusted Publishing? Yes
Uploaded via: twine/6.1.0 CPython/3.13.14

File hashes

Hashes for hg_cpp-0.4.1-cp312-abi3-win_amd64.whl
Algorithm	Hash digest
SHA256	`9bc5e275d26ab171b4b06c9f55b92cea2388023493693c70a38677d3158573dd`
MD5	`215a8e3ff235cfaac562c59424ea40e7`
BLAKE2b-256	`1c874de2717d21da91036f997b91176c07686e770f192b220d8c4dbe9b5b78ca`

See more details on using hashes here.

Provenance

The following attestation bundles were made for hg_cpp-0.4.1-cp312-abi3-win_amd64.whl:

Publisher: build.yml on hhenson/hg_cpp

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

Statement:
- Statement type: https://in-toto.io/Statement/v1
- Predicate type: https://docs.pypi.org/attestations/publish/v1
- Subject name: hg_cpp-0.4.1-cp312-abi3-win_amd64.whl
- Subject digest: 9bc5e275d26ab171b4b06c9f55b92cea2388023493693c70a38677d3158573dd
- Sigstore transparency entry: 2206296895
- Sigstore integration time: Jul 20, 2026
Source repository:
- Permalink: hhenson/hg_cpp@f1f4b4ba8c7c065870ec2c3ee2526b294313c238
- Branch / Tag: refs/tags/v_0.4.1
- Owner: https://github.com/hhenson
- Access: public
Publication detail:
- Token Issuer: https://token.actions.githubusercontent.com
- Runner Environment: github-hosted
- Publication workflow: build.yml@f1f4b4ba8c7c065870ec2c3ee2526b294313c238
- Trigger Event: push

File details

Details for the file hg_cpp-0.4.1-cp312-abi3-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl.

File metadata

Download URL: hg_cpp-0.4.1-cp312-abi3-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl
Upload date: Jul 20, 2026
Size: 17.0 MB
Tags: CPython 3.12+, manylinux: glibc 2.27+ x86-64, manylinux: glibc 2.28+ x86-64
Uploaded using Trusted Publishing? Yes
Uploaded via: twine/6.1.0 CPython/3.13.14

File hashes

Hashes for hg_cpp-0.4.1-cp312-abi3-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl
Algorithm	Hash digest
SHA256	`66a11b5a509b5b7cd007fb20d5569fe2415385d84456e00c60da819e9f2fac92`
MD5	`09b2d10bfd4861ed77f37ca523f07472`
BLAKE2b-256	`5a97f20efbba555ec0d62de3838b764c2dfd80a8e98231772e54d8d2a31630d9`

See more details on using hashes here.

Provenance

The following attestation bundles were made for hg_cpp-0.4.1-cp312-abi3-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl:

Publisher: build.yml on hhenson/hg_cpp

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

Statement:
- Statement type: https://in-toto.io/Statement/v1
- Predicate type: https://docs.pypi.org/attestations/publish/v1
- Subject name: hg_cpp-0.4.1-cp312-abi3-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl
- Subject digest: 66a11b5a509b5b7cd007fb20d5569fe2415385d84456e00c60da819e9f2fac92
- Sigstore transparency entry: 2206296867
- Sigstore integration time: Jul 20, 2026
Source repository:
- Permalink: hhenson/hg_cpp@f1f4b4ba8c7c065870ec2c3ee2526b294313c238
- Branch / Tag: refs/tags/v_0.4.1
- Owner: https://github.com/hhenson
- Access: public
Publication detail:
- Token Issuer: https://token.actions.githubusercontent.com
- Runner Environment: github-hosted
- Publication workflow: build.yml@f1f4b4ba8c7c065870ec2c3ee2526b294313c238
- Trigger Event: push

File details

Details for the file hg_cpp-0.4.1-cp312-abi3-macosx_15_0_arm64.whl.

File metadata

Download URL: hg_cpp-0.4.1-cp312-abi3-macosx_15_0_arm64.whl
Upload date: Jul 20, 2026
Size: 14.7 MB
Tags: CPython 3.12+, macOS 15.0+ ARM64
Uploaded using Trusted Publishing? Yes
Uploaded via: twine/6.1.0 CPython/3.13.14

File hashes

Hashes for hg_cpp-0.4.1-cp312-abi3-macosx_15_0_arm64.whl
Algorithm	Hash digest
SHA256	`000e68e53df7670e6f263dbaa1b1be4a33ff5e60664df81ab8da979cb5c49cec`
MD5	`692516d1d77ebe62a8fc8dd027a18c14`
BLAKE2b-256	`c35f601711b240d2c22080dddbaff0182b27baf902d4e63fd7fdb8d52a63fd5f`

See more details on using hashes here.

Provenance

The following attestation bundles were made for hg_cpp-0.4.1-cp312-abi3-macosx_15_0_arm64.whl:

Publisher: build.yml on hhenson/hg_cpp

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

Statement:
- Statement type: https://in-toto.io/Statement/v1
- Predicate type: https://docs.pypi.org/attestations/publish/v1
- Subject name: hg_cpp-0.4.1-cp312-abi3-macosx_15_0_arm64.whl
- Subject digest: 000e68e53df7670e6f263dbaa1b1be4a33ff5e60664df81ab8da979cb5c49cec
- Sigstore transparency entry: 2206296880
- Sigstore integration time: Jul 20, 2026
Source repository:
- Permalink: hhenson/hg_cpp@f1f4b4ba8c7c065870ec2c3ee2526b294313c238
- Branch / Tag: refs/tags/v_0.4.1
- Owner: https://github.com/hhenson
- Access: public
Publication detail:
- Token Issuer: https://token.actions.githubusercontent.com
- Runner Environment: github-hosted
- Publication workflow: build.yml@f1f4b4ba8c7c065870ec2c3ee2526b294313c238
- Trigger Event: push