Appendix C: Dependency Managers

Batuta detects dependencies in source projects by analyzing manifest and lock files from multiple package managers, then maps them to Rust crate equivalents.

Supported Managers

Manager	Language	Manifest File	Lock File
pip	Python	`requirements.txt`, `pyproject.toml`	`requirements.txt`
poetry	Python	`pyproject.toml`	`poetry.lock`
npm	JavaScript	`package.json`	`package-lock.json`
make	C/C++	`Makefile`	N/A
cmake	C/C++	`CMakeLists.txt`	N/A

Detection and Cargo.toml Generation

batuta analyze --dependencies /path/to/project

Batuta generates a Cargo.toml from detected dependencies:

[dependencies]
trueno = "0.14"           # from: numpy >= 1.24.0
aprender = "0.24"         # from: scikit-learn ~= 1.3
realizar = "0.5"          # from: torch >= 2.0
reqwest = "0.12"          # from: requests >= 2.28
serde = { version = "1", features = ["derive"] }  # from: json (stdlib)

Version Constraint Mapping

Python Syntax	Meaning	Rust Equivalent
`== 1.2.3`	Exact	`= "1.2.3"`
`>= 1.2.0`	Minimum	`">= 1.2.0"`
`~= 1.2`	Compatible (>= 1.2, < 2.0)	`"1.2"`

Common Python-to-Rust Mappings

Python	Rust Crate	Notes
numpy	trueno	Stack native
scikit-learn	aprender	Stack native
torch	realizar	Inference only
pandas	polars / alimentar	alimentar for Arrow
requests	reqwest	Async HTTP
flask / fastapi	axum	Async web framework
click	clap	CLI argument parsing
pydantic	serde	Serialization
pytest	(built-in)	`#[test]` + proptest
logging	tracing	Structured logging

Custom Mappings

Override or extend defaults in batuta.toml:

[dependencies.mapping]
my_internal_lib = { crate = "my-rust-lib", version = "0.5" }
boto3 = { crate = "aws-sdk-s3", version = "1", features = ["behavior-version-latest"] }
setuptools = { ignore = true }

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