flexstanr

0.1.0

Portable Backend Layer for 'Stan' Models

0packages depend

160downloads / year

75.2%test coverage

12/13checks pass

Overview

About

Maintained by Carl PearsonFirst published 2026-07-171 releasesCRAN page ↗GitHub ↗

Gives a 'Stan'-based R package one interface for fitting its models through either 'rstan' or (optionally) 'cmdstanr'. Collects and validates sampler options, guarding against mixing one backend's argument vocabulary into the other, dispatches the fit to the chosen backend, and exposes backend-agnostic accessors for reading posterior draws, extracting parameters, and running generated quantities. The host package supplies its own compiled models; flexstanr resolves them from the calling package at run time, so the same code works whichever backend is installed.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("flexstanr", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("ACCIDDA/flexstanr")

Development version from ACCIDDA/flexstanr. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-flexstanr

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-flexstanr

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-flexstanr

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

1NOTE12OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-gcc

Slowest check: 4.2 min · r-oldrel-macos-x86_64

Code health

Yes

Tests · ratio 0.34

75.2%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-07-18
7 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 291 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 67% structuredCode of conductNoContributing guideNo

Examples that run: 29%
Documented parameters: 100%
Return-value docs: 100%
References docs: 0%

Downloads

160

CRAN downloads in the past year

Rank #24,403 · ~0/day · ~13/mo

Releases R versions

Daily download trend is not available in this view yet.

16030 days

16090 days

1601 year

Compare downloads with other packages →

Also on4 r2u

Repository

GitHub ↗ accidda/flexstanr

0Stars

0Forks

2Open issues

0Open PRs

0Releases

Last activity 2026-07-29

Issues over time

2026-07-18 · 42026-08-01 · 2

Repository practices

Upstream repositoryBeta

3 development-tooling and community-health practices detected across 3 families in the upstream repository

Checks run against github.com/accidda/flexstanr on 2026-07-31.

Continuous integration (1)

GitHub Actions

CRAN release process (1)

cran-comments.md

Lint, format, editor (1)

lintr

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

9 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.1.0

Imports (3)

methodsrstantools

LinkingTo (0)

none

Suggests (8)

cmdstanr desc knitr posterior rmarkdown spelling testthat withr

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (2)

Maintainer (1)

Carl Pearson

Author, Maintainer

Authors (2)

Carl Pearson

Author, Maintainer

Weston Voglesonger

Author

Package Timeline

1 release. R releases are shown for context.

0.1.0Latest
2026-07-17 · current release
R
R 4.6.0 released · 2026-04-24

Package metadata

First published: 2026-07-17
Total releases: 1 / 1 yrs
License: MIT + file LICENSE OSI
Additional repositories: stan-dev.r-universe.dev
Minimum R: ≥ 4.1.0
Download size: not tracked yet
Installed size: not tracked yet
With dependencies: not tracked yet

Report a problem with this page →