panproto-grammars-functional

PyPI Python License: MIT

Companion grammar pack for panproto shipping tree-sitter grammars for functional-language source: Haskell, OCaml, Elm, Gleam, Erlang, Elixir, PureScript, F#, Clojure, Scheme, and Racket.

Companion packs are how the Python wheel adds tree-sitter grammars without bloating the core: panproto itself bundles only the 11-language group-core baseline, and packs like this one extend that surface as separate pip-installable wheels. Installing this package makes its grammars available to panproto.AstParserRegistry() automatically.

Status

Pre-1.0 with arbitrary breaking changes between minor versions. The pack version tracks the workspace panproto version on every release; consumers should pin both to the same minor (e.g. panproto>=0.45,<0.46 and panproto-grammars-functional>=0.45,<0.46).

Python 3.13+ required.

Installation

pip install panproto-grammars-functional

Wheels are published on PyPI for Linux x86_64 / aarch64, macOS arm64 / x86_64, and Windows x86_64. No Rust toolchain is required.

Pulls in panproto>=0.45 as a runtime dependency. If panproto is not already installed, pip resolves it automatically.

Synopsis

import panproto

reg = panproto.AstParserRegistry()
# The grammars from this pack are now in the registry alongside the
# group-core ones (Python, JavaScript, Rust, ...).
# schema = reg.parse_with_protocol("haskell", b"f x = x", "main.hs")

Nothing to import from this package directly. The architecture is described in bindings/python/README.md.

Languages

Haskell · OCaml · Elm · Gleam · Erlang · Elixir · PureScript · F# · Clojure · Scheme · Racket.

Architecture

Each companion is a separate pyo3 cdylib depending on panproto-grammars with one group-* feature flag. On installation it registers a panproto.grammars entry point that points at its _impl submodule; on construction panproto.AstParserRegistry() walks every such entry point and threads the discovered grammar metadata into the native registry. Cross-cdylib transport uses raw FFI pointers cast to integers; the trust boundary lives on the panproto side.

Source: crates/panproto-grammars-functional on the Rust side, bindings/python-grammars-functional on the Python side.

License

MIT

Project links

Data verified by PyPI on Aug 18, 2026
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Credits

Author: Aaron Steven White

GitHub Statistics

Data verified by PyPI on Aug 18, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License expression

MIT
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Requires

Python >=3.13

Tags

panproto tree-sitter grammar haskell ocaml

Classifiers

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