Crate venus_core 

Core engine for Venus reactive notebook environment.

⚠️ API Stability Warning

This crate contains internal APIs that are UNSTABLE and may change without notice.

For notebook development, use the venus crate instead:

use venus::prelude::*;  // STABLE user-facing API

The venus-core APIs are intended for:

• Building custom notebook tools and extensions
• Advanced integrations with Venus internals
• Contributing to Venus development

Stability guarantees:

• ❌ No SemVer guarantees - breaking changes may occur in minor versions (0.x.y)
• ❌ No deprecation warnings - APIs may be removed without warning
• ❌ Internal implementation details - subject to refactoring

If you need stable APIs, please open an issue describing your use case.

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This crate provides:

• Graph engine for dependency resolution
• Compilation pipeline (Cranelift JIT + LLVM)
• State management with schema evolution
• Salsa-based incremental computation
• Cell execution and hot-reload

Re-exports

pub use error::Error;

pub use error::Result;

pub use paths::NotebookDirs;

pub use execute::CellContext;

pub use execute::ExecutionCallback;

pub use execute::HotReloader;

pub use execute::LinearExecutor;

pub use execute::LoadedCell;

pub use execute::ParallelExecutor;

pub use execute::ProcessExecutor;

pub use execute::WindowsDllHandler;

pub use graph::CellId;

pub use graph::CellInfo;

pub use graph::CellParser;

pub use graph::Dependency;

pub use graph::GraphEngine;

pub use salsa_db::CellData;

pub use salsa_db::CellOutputData;

pub use salsa_db::CellOutputs;

pub use salsa_db::CompilationStatus;

pub use salsa_db::CompiledCellData;

pub use salsa_db::CompilerSettings;

pub use salsa_db::ExecutionStatus;

pub use salsa_db::GraphAnalysis;

pub use salsa_db::QueryResult;

pub use salsa_db::SourceFile;

pub use salsa_db::VenusDatabase;

pub use salsa_db::all_cells_executed;

pub use salsa_db::cell_names;

pub use salsa_db::cell_output;

pub use salsa_db::cell_output_data;

pub use salsa_db::compile_all_cells;

pub use salsa_db::compiled_cell;

pub use salsa_db::dependency_hash;

pub use salsa_db::execution_order;

pub use salsa_db::execution_order_result;

pub use salsa_db::graph_analysis;

pub use salsa_db::graph_analysis_result;

pub use salsa_db::invalidated_by;

pub use salsa_db::parallel_levels;

pub use salsa_db::parse_cells;

pub use salsa_db::parse_cells_result;

pub use state::CellOutput;

pub use state::SchemaChange;

pub use state::StateManager;

pub use state::TypeFingerprint;

pub use state::ZeroCopyOutput;

Modules

compile

Compilation pipeline for Venus notebooks.

error

Error types for venus-core.

execute

Execution engine for Venus notebooks.

graph

Graph engine for dependency resolution.

ipc

Inter-process communication for Venus worker processes.

paths

Notebook directory management.

salsa_db

Salsa-based incremental computation database for Venus.

state

State management for Venus notebooks.

widgets

Interactive widgets for Venus notebooks.