GitHub Actions for R

Contents

• Links
• R CMD Check
• Example Workflows
• Quickstart CI workflow
  • When should you use it?
• Standard CI workflow
  • When should you use it?
• Tidyverse CI workflow
  • When should you use it?
• Test coverage workflow
• Lint workflow
• Commands workflow
  • When should you use it?
• Render Rmarkdown
• Build pkgdown site
• Document package
• Style package
• Build bookdown site
• Build blogdown site
• Shiny App Deployment
• Docker based workflow
• Bioconductor-friendly workflow
• Lint project workflow
• Forcing binaries
• Appendix: Links

Links

• GHA - R Build Blogdown
• GHA - R Build Bookdown
• GHA - R Build-Check-Install
• GHA - R Check (Standard)
• GHA - R Code Coverage
• GHA - R Docker
• GHA - R Lint
• GHA - R Package Validation
• GHA - R pkgcheck
• GHA - R pkgdown
• GHA - R Render RMD
• GHA - R roxygen
• GHA - R ShinyApp Deploy
• GHA - R Spelling
• GHA - R Test Coverage
• GHA - Release

R CMD Check

• check-full.yml

# NOTE: This workflow is overkill for most R packages
# check-standard.yaml is likely a better choice
# usethis::use_github_action("check-standard") will install it.
#
# For help debugging build failures open an issue on the RStudio community with the 'github-actions' tag.
# https://community.rstudio.com/new-topic?category=Package%20development&tags=github-actions
on:
  push:
    branches:
      - main
      - master
  pull_request:
    branches:
      - main
      - master

name: R-CMD-check

jobs:
  R-CMD-check:
    runs-on: ${{ matrix.config.os }}

    name: ${{ matrix.config.os }} (${{ matrix.config.r }})

    strategy:
      fail-fast: false
      matrix:
        config:
          - {os: macOS-latest,   r: 'release'}
          - {os: windows-latest, r: 'release'}
          - {os: windows-latest, r: '3.6'}
          - {os: ubuntu-18.04,   r: 'devel', rspm: "https://packagemanager.rstudio.com/cran/__linux__/bionic/latest", http-user-agent: "R/4.0.0 (ubuntu-18.04) R (4.0.0 x86_64-pc-linux-gnu x86_64 linux-gnu) on GitHub Actions" }
          - {os: ubuntu-18.04,   r: 'release', rspm: "https://packagemanager.rstudio.com/cran/__linux__/bionic/latest"}
          - {os: ubuntu-18.04,   r: 'oldrel',  rspm: "https://packagemanager.rstudio.com/cran/__linux__/bionic/latest"}
          - {os: ubuntu-18.04,   r: '3.5',     rspm: "https://packagemanager.rstudio.com/cran/__linux__/bionic/latest"}
          - {os: ubuntu-18.04,   r: '3.4',     rspm: "https://packagemanager.rstudio.com/cran/__linux__/bionic/latest"}
          - {os: ubuntu-18.04,   r: '3.3',     rspm: "https://packagemanager.rstudio.com/cran/__linux__/bionic/latest"}

    env:
      RSPM: ${{ matrix.config.rspm }}
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}

    steps:
      - uses: actions/checkout@v2

      - uses: r-lib/actions/setup-r@v1
        id: install-r
        with:
          r-version: ${{ matrix.config.r }}
          http-user-agent: ${{ matrix.config.http-user-agent }}

      - uses: r-lib/actions/setup-pandoc@v1

      - name: Install pak and query dependencies
        run: |
          install.packages("pak", repos = "https://r-lib.github.io/p/pak/dev/")
          saveRDS(pak::pkg_deps("local::.", dependencies = TRUE), ".github/r-depends.rds")
        shell: Rscript {0}

      - name: Restore R package cache
        uses: actions/cache@v2
        with:
          path: |
            ${{ env.R_LIBS_USER }}/*
            !${{ env.R_LIBS_USER }}/pak
          key: ${{ matrix.config.os }}-${{ steps.install-r.outputs.installed-r-version }}-1-${{ hashFiles('.github/r-depends.rds') }}
          restore-keys: ${{ matrix.config.os }}-${{ steps.install-r.outputs.installed-r-version }}-1-

      - name: Install system dependencies
        if: runner.os == 'Linux'
        run: |
          pak::local_system_requirements(execute = TRUE)
          pak::pkg_system_requirements("rcmdcheck", execute = TRUE)
        shell: Rscript {0}

      - name: Install dependencies
        run: |
          pak::local_install_dev_deps(upgrade = TRUE)
          pak::pkg_install("rcmdcheck")
        shell: Rscript {0}

      - name: Session info
        run: |
          options(width = 100)
          pkgs <- installed.packages()[, "Package"]
          sessioninfo::session_info(pkgs, include_base = TRUE)
        shell: Rscript {0}

      - name: Check
        env:
          _R_CHECK_CRAN_INCOMING_: false
        run: |
          options(crayon.enabled = TRUE)
          rcmdcheck::rcmdcheck(args = c("--no-manual", "--as-cran"), error_on = "warning", check_dir = "check")
        shell: Rscript {0}

      - name: Show testthat output
        if: always()
        run: find check -name 'testthat.Rout*' -exec cat '{}' \; || true
        shell: bash

      - name: Upload check results
        if: failure()
        uses: actions/upload-artifact@main
        with:
          name: ${{ matrix.config.os }}-r${{ matrix.config.r }}-results
          path: check

• check-standard.yml

# For help debugging build failures open an issue on the RStudio community with the 'github-actions' tag.
# https://community.rstudio.com/new-topic?category=Package%20development&tags=github-actions
on:
  push:
    branches:
      - main
      - master
  pull_request:
    branches:
      - main
      - master

name: R-CMD-check

jobs:
  R-CMD-check:
    runs-on: ${{ matrix.config.os }}

    name: ${{ matrix.config.os }} (${{ matrix.config.r }})

    strategy:
      fail-fast: false
      matrix:
        config:
          - {os: windows-latest, r: 'release'}
          - {os: macOS-latest, r: 'release'}
          - {os: ubuntu-20.04, r: 'release', rspm: "https://packagemanager.rstudio.com/cran/__linux__/focal/latest"}
          - {os: ubuntu-20.04, r: 'devel', rspm: "https://packagemanager.rstudio.com/cran/__linux__/focal/latest"}

    env:
      R_REMOTES_NO_ERRORS_FROM_WARNINGS: true
      RSPM: ${{ matrix.config.rspm }}
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}

    steps:
      - uses: actions/checkout@v2

      - uses: r-lib/actions/setup-r@v1
        with:
          r-version: ${{ matrix.config.r }}

      - uses: r-lib/actions/setup-pandoc@v1

      - name: Query dependencies
        run: |
          install.packages('remotes')
          saveRDS(remotes::dev_package_deps(dependencies = TRUE), ".github/depends.Rds", version = 2)
          writeLines(sprintf("R-%i.%i", getRversion()$major, getRversion()$minor), ".github/R-version")
        shell: Rscript {0}

      - name: Restore R package cache
        if: runner.os != 'Windows'
        uses: actions/cache@v2
        with:
          path: ${{ env.R_LIBS_USER }}
          key: ${{ runner.os }}-${{ hashFiles('.github/R-version') }}-1-${{ hashFiles('.github/depends.Rds') }}
          restore-keys: ${{ runner.os }}-${{ hashFiles('.github/R-version') }}-1-

      - name: Install system dependencies
        if: runner.os == 'Linux'
        run: |
          while read -r cmd
          do
            eval sudo $cmd
          done < <(Rscript -e 'writeLines(remotes::system_requirements("ubuntu", "20.04"))')

      - name: Install dependencies
        run: |
          remotes::install_deps(dependencies = TRUE)
          remotes::install_cran("rcmdcheck")
        shell: Rscript {0}

      - name: Check
        env:
          _R_CHECK_CRAN_INCOMING_REMOTE_: false
        run: |
          options(crayon.enabled = TRUE)
          rcmdcheck::rcmdcheck(args = c("--no-manual", "--as-cran"), error_on = "warning", check_dir = "check")
        shell: Rscript {0}

      - name: Upload check results
        if: failure()
        uses: actions/upload-artifact@main
        with:
          name: ${{ runner.os }}-r${{ matrix.config.r }}-results
          path: check

Example Workflows

Package workflows:

• check-release - A simple CI workflow to check with the release version of R.
• check-standard - A standard CI workflow to check with the release version of R on the three major OSs.
• check-full - A more complex CI workflow
• test-coverage - Run covr::codecov() on an R package.
• lint - Run lintr::lint_package() on an R package.
• pr-commands - Adds /document and /style commands for pull requests.
• pkgdown - Build a pkgdown site for an R package and deploy it to GitHub Pages.
• document - Run roxygen2::roxygenise() on an R package.
• style - Run styler::style_pkg() on an R package.

RMarkdown workflows:

• render-rmarkdown - Render one or more Rmarkdown files when they change and commit the result.
• bookdown - Build a bookdown site and deploy it to GitHub Pages.
• blogdown - Build a blogdown site and deploy it to GitHub Pages.

Other workflows:

• docker - For custom workflows based on docker containers.
• Bioconductor - A CI workflow for packages to be released on Bioconductor.
• lint-project - Run lintr::lint_dir() on an R project.
• shiny-deploy - Deploy a Shiny app to shinyapps.io or RStudio Connect.

Options and advice:

• Forcing binaries - An environment variable to always use binary packages.

Quickstart CI workflow

usethis::use_github_action("check-release")

This workflow installs latest release R version on macOS and runs R CMD check via the rcmdcheck package. If this is the first time you have used CI for a project this is probably what you want to use.

When should you use it?

1. You have a simple R package
2. There is no OS-specific code
3. You want a quick start with R CI

# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
on:
  push:
    branches: [main, master]
  pull_request:
    branches: [main, master]

name: R-CMD-check

jobs:
  R-CMD-check:
    runs-on: ubuntu-latest
    env:
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
      R_KEEP_PKG_SOURCE: yes
    steps:
      - uses: actions/checkout@v2

      - uses: r-lib/actions/setup-r@v2
        with:
          use-public-rspm: true

      - uses: r-lib/actions/setup-r-dependencies@v2
        with:
          extra-packages: any::rcmdcheck
          needs: check

      - uses: r-lib/actions/check-r-package@v2

Standard CI workflow

usethis::use_github_action("check-standard")

This workflow runs R CMD check via the rcmdcheck package on the three major OSs (linux, macOS and Windows) with the current, development, and previous versions of R. If you plan to someday submit your package to CRAN or Bioconductor this is likely the workflow you want to use.

When should you use it?

1. You plan to submit your package to CRAN or Bioconductor
2. Your package has OS-specific code

# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
on:
  push:
    branches: [main, master]
  pull_request:
    branches: [main, master]

name: R-CMD-check

jobs:
  R-CMD-check:
    runs-on: ${{ matrix.config.os }}

    name: ${{ matrix.config.os }} (${{ matrix.config.r }})

    strategy:
      fail-fast: false
      matrix:
        config:
          - {os: macOS-latest,   r: 'release'}
          - {os: windows-latest, r: 'release'}
          - {os: ubuntu-latest,   r: 'devel', http-user-agent: 'release'}
          - {os: ubuntu-latest,   r: 'release'}
          - {os: ubuntu-latest,   r: 'oldrel-1'}

    env:
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
      R_KEEP_PKG_SOURCE: yes

    steps:
      - uses: actions/checkout@v2

      - uses: r-lib/actions/setup-pandoc@v2

      - uses: r-lib/actions/setup-r@v2
        with:
          r-version: ${{ matrix.config.r }}
          http-user-agent: ${{ matrix.config.http-user-agent }}
          use-public-rspm: true

      - uses: r-lib/actions/setup-r-dependencies@v2
        with:
          extra-packages: any::rcmdcheck
          needs: check

      - uses: r-lib/actions/check-r-package@v2
        with:
          upload-snapshots: true

Tidyverse CI workflow

usethis::use_github_action("check-full")

This workflow installs the last 5 minor R versions and runs R CMD check via the rcmdcheck package on the three major OSs (linux, macOS and Windows). This workflow is what the tidyverse teams uses on their repositories, but is overkill for less widely used packages, which are better off using the simpler quickstart CI workflow.

When should you use it?

1. You are a tidyverse developer
2. You have a complex R package
3. With OS-specific code
4. And you want to ensure compatibility with many older R versions

# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
#
# NOTE: This workflow is overkill for most R packages and
# check-standard.yaml is likely a better choice.
# usethis::use_github_action("check-standard") will install it.
on:
  push:
    branches: [main, master]
  pull_request:
    branches: [main, master]

name: R-CMD-check

jobs:
  R-CMD-check:
    runs-on: ${{ matrix.config.os }}

    name: ${{ matrix.config.os }} (${{ matrix.config.r }})

    strategy:
      fail-fast: false
      matrix:
        config:
          - {os: macOS-latest,   r: 'release'}

          - {os: windows-latest, r: 'release'}
          # Use 3.6 to trigger usage of RTools35
          - {os: windows-latest, r: '3.6'}

          # Use older ubuntu to maximise backward compatibility
          - {os: ubuntu-18.04,   r: 'devel', http-user-agent: 'release'}
          - {os: ubuntu-18.04,   r: 'release'}
          - {os: ubuntu-18.04,   r: 'oldrel-1'}
          - {os: ubuntu-18.04,   r: 'oldrel-2'}
          - {os: ubuntu-18.04,   r: 'oldrel-3'}
          - {os: ubuntu-18.04,   r: 'oldrel-4'}

    env:
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
      R_KEEP_PKG_SOURCE: yes

    steps:
      - uses: actions/checkout@v2

      - uses: r-lib/actions/setup-pandoc@v2

      - uses: r-lib/actions/setup-r@v2
        with:
          r-version: ${{ matrix.config.r }}
          http-user-agent: ${{ matrix.config.http-user-agent }}
          use-public-rspm: true

      - uses: r-lib/actions/setup-r-dependencies@v2
        with:
          extra-packages: any::rcmdcheck
          needs: check

      - uses: r-lib/actions/check-r-package@v2
        with:
          upload-snapshots: true

Test coverage workflow

usethis::use_github_action("test-coverage")

This example uses the covr package to query the test coverage of your package and upload the result to codecov.io

# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
on:
  push:
    branches: [main, master]
  pull_request:
    branches: [main, master]

name: test-coverage

jobs:
  test-coverage:
    runs-on: ubuntu-latest
    env:
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}

    steps:
      - uses: actions/checkout@v2

      - uses: r-lib/actions/setup-r@v2
        with:
          use-public-rspm: true

      - uses: r-lib/actions/setup-r-dependencies@v2
        with:
          extra-packages: any::covr
          needs: coverage

      - name: Test coverage
        run: covr::codecov(quiet = FALSE)
        shell: Rscript {0}

Lint workflow

usethis::use_github_action("lint")

This example uses the lintr package to lint your package and return the results as build annotations.

# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
on:
  push:
    branches: [main, master]
  pull_request:
    branches: [main, master]

name: lint

jobs:
  lint:
    runs-on: ubuntu-latest
    env:
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
    steps:
      - uses: actions/checkout@v2

      - uses: r-lib/actions/setup-r@v2
        with:
          use-public-rspm: true

      - uses: r-lib/actions/setup-r-dependencies@v2
        with:
          extra-packages: any::lintr
          needs: lint

      - name: Lint
        run: lintr::lint_package()
        shell: Rscript {0}

Commands workflow

usethis::use_github_action("pr-commands")

This workflow enables the use of 2 R specific commands in pull request issue comments. /document will use roxygen2 to rebuild the documentation for the package and commit the result to the pull request. /style will use styler to restyle your package.

When should you use it?

1. You get frequent pull requests, often with documentation only fixes.
2. You regularly style your code with styler, and require all additions be styled as well.

# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
on:
  issue_comment:
    types: [created]

name: Commands

jobs:
  document:
    if: ${{ github.event.issue.pull_request && (github.event.comment.author_association == 'MEMBER' || github.event.comment.author_association == 'OWNER') && startsWith(github.event.comment.body, '/document') }}
    name: document
    runs-on: ubuntu-latest
    env:
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
    steps:
      - uses: actions/checkout@v2

      - uses: r-lib/actions/pr-fetch@v2
        with:
          repo-token: ${{ secrets.GITHUB_TOKEN }}

      - uses: r-lib/actions/setup-r@v2
        with:
          use-public-rspm: true

      - uses: r-lib/actions/setup-r-dependencies@v2
        with:
          extra-packages: any::roxygen2
          needs: pr-document

      - name: Document
        run: roxygen2::roxygenise()
        shell: Rscript {0}

      - name: commit
        run: |
          git config --local user.name "$GITHUB_ACTOR"
          git config --local user.email "$GITHUB_ACTOR@users.noreply.github.com"
          git add man/\* NAMESPACE
          git commit -m 'Document'

      - uses: r-lib/actions/pr-push@v2
        with:
          repo-token: ${{ secrets.GITHUB_TOKEN }}

  style:
    if: ${{ github.event.issue.pull_request && (github.event.comment.author_association == 'MEMBER' || github.event.comment.author_association == 'OWNER') && startsWith(github.event.comment.body, '/style') }}
    name: style
    runs-on: ubuntu-latest
    env:
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
    steps:
      - uses: actions/checkout@v2

      - uses: r-lib/actions/pr-fetch@v2
        with:
          repo-token: ${{ secrets.GITHUB_TOKEN }}

      - uses: r-lib/actions/setup-r@v2

      - name: Install dependencies
        run: install.packages("styler")
        shell: Rscript {0}

      - name: Style
        run: styler::style_pkg()
        shell: Rscript {0}

      - name: commit
        run: |
          git config --local user.name "$GITHUB_ACTOR"
          git config --local user.email "$GITHUB_ACTOR@users.noreply.github.com"
          git add \*.R
          git commit -m 'Style'

      - uses: r-lib/actions/pr-push@v2
        with:
          repo-token: ${{ secrets.GITHUB_TOKEN }}

Render Rmarkdown

usethis::use_github_action("render-rmarkdown")

This example automatically re-builds any Rmarkdown file in the repository whenever it changes and commits the results to the same branch.

# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
on:
  push:
    paths: ['**.Rmd']

name: render-rmarkdown

jobs:
  render-rmarkdown:
    runs-on: ubuntu-latest
    env:
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
    steps:
      - name: Checkout repo
        uses: actions/checkout@v2
        with:
          fetch-depth: 0

      - uses: r-lib/actions/setup-pandoc@v2

      - uses: r-lib/actions/setup-r@v2

      - uses: r-lib/actions/setup-renv@v2

      - name: Render Rmarkdown files and Commit Results
        run: |
          RMD_PATH=($(git diff --name-only ${{ github.event.before }} ${{ github.sha }} | grep '[.]Rmd$'))
          Rscript -e 'for (f in commandArgs(TRUE)) if (file.exists(f)) rmarkdown::render(f)' ${RMD_PATH[*]}
          git config --local user.name "$GITHUB_ACTOR"
          git config --local user.email "$GITHUB_ACTOR@users.noreply.github.com"
          git commit ${RMD_PATH[*]/.Rmd/.md} -m 'Re-build Rmarkdown files' || echo "No changes to commit"
          git push origin || echo "No changes to commit"

Build pkgdown site

usethis::use_github_action("pkgdown")

This example builds a pkgdown site for a repository and pushes the built package to GitHub Pages. The inclusion of workflow_dispatch means the workflow can be run manually, from the browser, or triggered via the GitHub REST API.

# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
on:
  push:
    branches: [main, master]
  pull_request:
    branches: [main, master]
  release:
    types: [published]
  workflow_dispatch:

name: pkgdown

jobs:
  pkgdown:
    runs-on: ubuntu-latest
    # Only restrict concurrency for non-PR jobs
    concurrency:
      group: pkgdown-${{ github.event_name != 'pull_request' || github.run_id }}
    env:
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
    steps:
      - uses: actions/checkout@v2

      - uses: r-lib/actions/setup-pandoc@v2

      - uses: r-lib/actions/setup-r@v2
        with:
          use-public-rspm: true

      - uses: r-lib/actions/setup-r-dependencies@v2
        with:
          extra-packages: any::pkgdown, local::.
          needs: website

      - name: Build site
        run: pkgdown::build_site_github_pages(new_process = FALSE, install = FALSE)
        shell: Rscript {0}

      - name: Deploy to GitHub pages 🚀
        if: github.event_name != 'pull_request'
        uses: JamesIves/github-pages-deploy-action@4.1.4
        with:
          clean: false
          branch: gh-pages
          folder: docs

Document package

usethis::use_github_action("document")

This example documents an R package whenever a file in the R/ directory changes, then commits and pushes the changes to the same branch.

# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
on:
  push:
    paths: ["R/**"]
  pull_request:
    paths: ["R/**"]

name: Document

jobs:
  document:
    runs-on: ubuntu-latest
    env:
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
    steps:
      - name: Checkout repo
        uses: actions/checkout@v2
        with:
          fetch-depth: 0

      - name: Setup R
        uses: r-lib/actions/setup-r@v2
        with:
          use-public-rspm: true

      - name: Install dependencies
        uses: r-lib/actions/setup-r-dependencies@v2
        with:
          extra-packages: any::roxygen2
          needs: roxygen2

      - name: Document
        run: roxygen2::roxygenise()
        shell: Rscript {0}

      - name: Commit and push changes
        run: |
          git config --local user.name "$GITHUB_ACTOR"
          git config --local user.email "$GITHUB_ACTOR@users.noreply.github.com"
          git add man/\* NAMESPACE
          git commit -m "Update documentation" || echo "No changes to commit"
          git pull --ff-only
          git push origin

Style package

usethis::use_github_action("style")

This example styles the R code in a package, then commits and pushes the changes to the same branch.

# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
on:
  push:
    paths: ["**.[rR]", "**.[rR]md", "**.[rR]markdown", "**.[rR]nw"]
  pull_request:
    paths: ["**.[rR]", "**.[rR]md", "**.[rR]markdown", "**.[rR]nw"]

name: Style

jobs:
  style:
    runs-on: ubuntu-latest
    env:
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
    steps:
      - name: Checkout repo
        uses: actions/checkout@v2
        with:
          fetch-depth: 0

      - name: Setup R
        uses: r-lib/actions/setup-r@v2
        with:
          use-public-rspm: true

      - name: Install dependencies
        uses: r-lib/actions/setup-r-dependencies@v2
        with:
          extra-packages: any::styler
          needs: styler

      - name: Enable styler cache
        run: styler::cache_activate()
        shell: Rscript {0}

      - name: Determine cache location
        id: styler-location
        run: |
          cat(
            "##[set-output name=location;]",
            styler::cache_info(format = "tabular")$location,
            "\n",
            sep = ""
          )
        shell: Rscript {0}

      - name: Cache styler
        uses: actions/cache@v2
        with:
          path: ${{ steps.styler-location.outputs.location }}
          key: ${{ runner.os }}-styler-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-styler-
            ${{ runner.os }}-

      - name: Style
        run: styler::style_pkg(filetype = c(".R", ".Rmd", ".Rmarkdown", ".Rnw"))
        shell: Rscript {0}

      - name: Commit and push changes
        run: |
          git config --local user.name "$GITHUB_ACTOR"
          git config --local user.email "$GITHUB_ACTOR@users.noreply.github.com"
          git add R/\*
          git commit -m "Style code" || echo "No changes to commit"
          git pull --ff-only
          git push origin

Build bookdown site

usethis::use_github_action("bookdown")

This example builds a bookdown site for a repository and then deploys the site via GitHub Pages. It uses renv to ensure the package versions remain consistent across builds. You will need to run renv::snapshot() locally and commit the renv.lock file before using this workflow, and after every time you add a new package to DESCRIPTION. See Using renv with Continous Integration for additional information.

# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
on:
  push:
    branches: [main, master]
  pull_request:
    branches: [main, master]
  workflow_dispatch:

name: bookdown

jobs:
  bookdown:
    runs-on: ubuntu-latest
    # Only restrict concurrency for non-PR jobs
    concurrency:
      group: pkgdown-${{ github.event_name != 'pull_request' || github.run_id }}
    env:
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
    steps:
      - uses: actions/checkout@v2

      - uses: r-lib/actions/setup-pandoc@v2

      - uses: r-lib/actions/setup-r@v2
        with:
          use-public-rspm: true

      - uses: r-lib/actions/setup-renv@v2

      - name: Cache bookdown results
        uses: actions/cache@v2
        with:
          path: _bookdown_files
          key: bookdown-${{ hashFiles('**/*Rmd') }}
          restore-keys: bookdown-

      - name: Build site
        run: bookdown::render_book("index.Rmd", quiet = TRUE)
        shell: Rscript {0}

      - name: Deploy to GitHub pages 🚀
        if: github.event_name != 'pull_request'
        uses: JamesIves/github-pages-deploy-action@4.1.4
        with:
          branch: gh-pages
          folder: _book

Build blogdown site

usethis::use_github_action("blogdown")

This example builds a blogdown site for a repository and then deploys the book via GitHub Pages. It uses renv to ensure the package versions remain consistent across builds. You will need to run renv::snapshot() locally and commit the renv.lock file before using this workflow, see Using renv with Continous Integration for additional information.

# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
on:
  push:
    branches: [main, master]
  pull_request:
    branches: [main, master]
  workflow_dispatch:

name: blogdown

jobs:
  blogdown:
    runs-on: ubuntu-latest
    # Only restrict concurrency for non-PR jobs
    concurrency:
      group: pkgdown-${{ github.event_name != 'pull_request' || github.run_id }}
    env:
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
    steps:
      - uses: actions/checkout@v2

      - uses: r-lib/actions/setup-pandoc@v2

      - uses: r-lib/actions/setup-r@v2
        with:
          use-public-rspm: true

      - uses: r-lib/actions/setup-renv@v2

      - name: Install hugo
        run: blogdown::install_hugo()
        shell: Rscript {0}

      - name: Build site
        run: blogdown::build_site(TRUE)
        shell: Rscript {0}

      - name: Deploy to GitHub pages 🚀
        if: github.event_name != 'pull_request'
        uses: JamesIves/github-pages-deploy-action@4.1.4
        with:
          branch: gh-pages
          folder: public

Shiny App Deployment

usethis::use_github_action("shiny-deploy")

This example will deploy your Shiny application to either shinyapps.io or RStudio Connect using the rsconnect package. The rsconnect package requires authorization to deploy an app using your account. This action does this by using your user name (RSCONNECT_USER), token (RSCONNECT_TOKEN), and secret (RSCONNECT_SECRET), which are securely accessed as GitHub Secrets. Your token and secret are private and should be kept confidential.

This action assumes you have an renv lockfile in your repository that describes the R packages and versions required for your Shiny application.

• See here for information on how to obtain the token and secret for configuring rsconnect: https://shiny.rstudio.com/articles/shinyapps.html

• See here for information on how to store private tokens in a repository as GitHub Secrets: https://docs.github.com/en/actions/reference/encrypted-secrets#creating-encrypted-secrets-for-a-repository

# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
on:
  push:
    branches: [main, master]

name: shiny-deploy

jobs:
  shiny-deploy:
    runs-on: ubuntu-latest
    env:
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
    steps:
      - uses: actions/checkout@v2

      - uses: r-lib/actions/setup-pandoc@v2

      - uses: r-lib/actions/setup-r@v2
        with:
          use-public-rspm: true

      - uses: r-lib/actions/setup-renv@v2

      - name: Install rsconnect
        run: install.packages("rsconnect")
        shell: Rscript {0}

      - name: Authorize and deploy app
        run: |
          rsconnect::setAccountInfo(${{ secrets.RSCONNECT_USER }}, ${{ secrets.RSCONNECT_TOKEN }}, ${{ secrets.RSCONNECT_SECRET }})
          rsconnect::deployApp()
        shell: Rscript {0}

Docker based workflow

usethis::use_github_action("docker")

If you develop locally with docker or are used to using other docker based CI services and already have a docker container with all of your R and system dependencies you can use that in GitHub Actions by adapting the following workflow. This example workflow assumes you build some model in fit_model.R and then have a report in report.Rmd. It then uploads the rendered html from the report as a build artifact.

# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
on: [push]

name: docker

jobs:
  docker:
    runs-on: ubuntu-latest
    container: rocker/verse
    steps:
      - uses: actions/checkout@v2

      - run: |
          source("fit_model.R")
          rmarkdown::render("report.Rmd")
        shell: Rscript {0}

      - name: Upload results
        uses: actions/upload-artifact@main
        with:
          name: results
          path: report.html

Bioconductor-friendly workflow

Bioconductor is a repository for tools for the analysis and comprehension of high-throughput genomic data that hosts close to 2,000 R packages. It follows a six month release cycle while R has a yearly release cycle. biocthis contains a user-contributed workflow that is Bioconductor-friendly described in detail atthe biocthis introductory vignette. You can add this workflow using the following R code:

## If needed
remotes::install_github("lcolladotor/biocthis")

## Create a GitHub Actions (GHA) workflow that is Bioconductor-friendly
biocthis::use_bioc_github_action()

## You can also use this GHA workflow without installing biocthis
usethis::use_github_action(
    "check-bioc",
    "https://bit.ly/biocthis_gha",
    "check-bioc.yml"
)

Lint project workflow

usethis::use_github_action("lint-project")

This example uses the lintr package to lint your project and return the results as annotations.

# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
on:
  push:
    branches: [main, master]
  pull_request:
    branches: [main, master]

name: lint-project

jobs:
  lint-project:
    runs-on: ubuntu-latest
    env:
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
    steps:
      - uses: actions/checkout@v2

      - uses: r-lib/actions/setup-r@v2
        with:
          use-public-rspm: true

      - name: Install lintr
        run: install.packages("lintr")
        shell: Rscript {0}

      - name: Lint root directory
        run: lintr::lint_dir()
        shell: Rscript {0}

Forcing binaries

Code repositories such as CRAN or RStudio’s RSPM provide R packages in binary (= pre-compiled) form for some platforms, but these binaries can sometimes be missing our lag behind the package sources published on the repository. The setup-r action, and all example workflows utilizing it follow the install.packages.compile.from.source options() default and will install from source when a binary is out of date. Installing from source can be slow and require additional system dependencies, but ensures that your workflow runs against the current versions of dependencies.

To always use binaries, even if they are out of date, set the environment variable R_COMPILE_AND_INSTALL_PACKAGES=never. You can set an environment variable by passing it as a name-value pair to the jobs.<job_id>.env keyword, as in this partial example:

jobs:
  R-CMD-check:
   # missing yaml here
    env:
      R_COMPILE_AND_INSTALL_PACKAGES: never
   # missing yaml here

R_COMPILE_AND_INSTALL_PACKAGES: never does what it says on the tin: it will never install from source. If there is no binary for the package, or none meeting the minimum version required in your DESCRIPTION, the installation of R package dependencies will be incomplete. This can lead to confusing errors, because while dependency installation will not fail in this situation, later steps in your workflow may fail because of the missing package(s).

You can learn more about packages in source and binary form here and here.

---

Appendix: Links

• Code
• Development

Backlinks:

list from [[GitHub Actions for R]] AND -"Changelog"