R

The R library lets you write Spade blocks using familiar R patterns — reading YAML, processing data with base R or tidyverse packages, and writing results. Type annotations use R's S4 class system via simple attributes.

Prerequisites🔗

• R 4.0 or later
• renv for dependency locking, with pak as its recommended installer backend
• The Spade CLI installed (Installation guide)

Dependencies🔗

A collection declares its CRAN dependencies in a DESCRIPTION file under Imports::

Imports:
    jsonlite,
    yaml

Running renv::snapshot() resolves those declared dependencies (using pak under the hood for fast, parallel installs) and records the exact versions into renv.lock at the collection root:

install.packages("jsonlite")
renv::snapshot()

renv.lock is the file spade install and the registry's build step actually read to reproduce the collection's library -- DESCRIPTION is where you declare what you depend on, renv.lock is the resolved, reproducible record of it.

Installation🔗

install.packages("spade")
renv::snapshot()