tarpolyglot: run Python, Julia, and Rust as targets pipeline steps

Details

tarpolyglot provides target constructors that execute Python, Julia, and Rust code inside a targets pipeline, using reticulate (Python), JuliaCall (Julia), and rextendr (Rust).

The user-facing constructors mirror the targets pair:

• tar_target_py() / tar_target_py_raw() for Python,

• tar_target_jl() / tar_target_jl_raw() for Julia,

• tar_target_rs() / tar_target_rs_raw() for Rust (compiled via rextendr/extendr; see vignette("rust")).

The non-_raw forms use non-standard evaluation on name/pattern and are meant for direct use in _targets.R; the _raw forms take a string name and are meant for use inside targets factories. Each constructor returns a single targets target object.

A Python/Julia step may combine up to three scripts: an optional R pre-script (prepare inputs), the required foreign script, and an optional R post-script (retrieve results). A Rust step has no pre-script: its #[extendr] functions are compiled and then called from the R post-script. Output is returned either as a converted R object or as a character vector of files on disk (output = "file").

Start with vignette("get_started") (motivation, limitations, a worked pipeline, and crew-based parallelism/isolation), then the per-language vignettes vignette("python"), vignette("julia"), and vignette("rust").

See also

Useful links:

• https://github.com/Pierre9344/tarpolyglot

• https://pierre9344.github.io/tarpolyglot/

• Report bugs at https://github.com/Pierre9344/tarpolyglot/issues

Author

Maintainer: Pierre Solomon pierre.solomon@laposte.net (ORCID)

Authors:

• Pierre Solomon pierre.solomon@laposte.net (ORCID)