# wch/r-source

Read-only mirror of R source code from https://svn.r-project.org/R/, updated hourly. See the build instructions on the wiki page.

Repository: https://github.com/wch/r-source
Canonical: https://ross.abutalabs.com/products/r-source
Homepage: https://github.com/wch/r-source/wiki/
Language: R
License: GPL-2.0
License Family: copyleft
Last push: 2026-09-03T00:22:36+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 100, release rhythm 35, longevity 100
- inputs: {"age_days": 5107, "days_push": 0, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1248, forks 329 (observed 2026-09-03T02:15:20.460302+00:00)

## What it is
A read-only Git mirror of the official R source code from the upstream SVN repository, updated hourly. It lets developers browse, clone, and search the full history of the R programming language implementation on GitHub.

## Use cases
- browse the R interpreter source code on GitHub
- clone R source with git instead of svn
- search R commit history and blame specific lines
- build R from source for development or patching
- check out a specific R release tag or branch
- contribute patches to R core development

## When to choose
- you need git-based access to R's source history
- you want to build or patch R itself
- you're studying the R interpreter implementation

## When to avoid
- you just want to install and use R (download a binary or CRAN release)
- you need an authoritative SVN checkout for official builds
- you want R packages rather than the language core

## Facets
- artifact type: library
- maturity: active
- function: programming-language, interpreter, data-science, math
- domain: programming-languages, data-science
- platform: cross-platform, windows
- tags: r-language, source-mirror, svn-mirror, statistical-computing, read-only-mirror, statistics, linux, macos

## Member repositories
- wch/r-source (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-09-03T02:15:20.460302+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T05:07:59.542741+00:00, confidence not recorded.
  - readme: https://github.com/wch/r-source (fetched 2026-09-03T02:15:20.460302+00:00, sha 48e2064edb5b)
  - homepage: https://github.com/wch/r-source/wiki/ (fetched 2026-08-29T12:19:05.822306+00:00, sha dc75c63fdd9d)
- Data as of 2026-08-30T08:39:29.467469+00:00.