r-lib

Guidelines and best practices for creating, extending, and refactoring linters in the r-lib/lintr package. Use this skill whenever implementing or modifying linter functions, XPath queries, and linter helpers.

Guidelines and conventions for writing unit tests for linters in the r-lib/lintr package using testthat. Use this skill whenever creating or modifying linter test files under tests/testthat/.

Guidelines and conventions for writing, composing, and formatting XPath expressions when building or refactoring linters. Use this skill whenever writing or analyzing XPath queries in linter definitions.

Guidelines and architecture for handling literate R documents (.Rmd, .qmd, .Rnw, .Rhtml) and source extraction in the r-lib/lintr package. Use this skill when modifying R/extract.R or working with non-R source files.

Guide for deprecating R functions/arguments. Use when a user asks to deprecate a function or parameter, including adding lifecycle warnings, updating documentation, adding NEWS entries, and updating tests.

Help users write correct R code for async, parallel, and distributed computing using mirai. Use when users need to run R code asynchronously or in parallel, write mirai code with correct dependency passing, set up parallel workers, convert from future or parallel, use mirai_map, integrate with Shiny or promises, or configure cluster/HPC computing.

Write revdep/issue.md to group packages by common error categories

Update the embedded system requirements database in inst/sysreqs from the upstream r-hub/r-system-requirements repo. Use when asked to update, sync, or refresh the embedded sysreqs / sysreqs rules / sysreqs database.