action.yaml

name: 'setup-r-dependencies'
description: 'Action to setup installation tools and install R dependencies'
author: 'Jim Hester'
inputs:
  cache-version:
    description: 'The version of the cache, change this from the default (1) to start over with a fresh cache'
    required: true
    default: 1
  extra-packages:
    description: 'Any extra packages to install outside of the packages listed in the dependencies'
  needs:
    description: 'Any extra Config/Needs fields which need to be included when installing dependencies'
  pak-version:
    description: 'Which pak version to use. Possible values are "stable", "rc" and "devel".'
    default: 'stable'
  working-directory:
    description: 'Using the working-directory keyword, you can specify the working directory of where "pkg_deps" command searches for dependencies in the "DESCRIPTION" file.'
    default: '.'
runs:
  using: "composite"
  steps:
      - name: Install pak and query dependencies
        run: |
          cat("::group::Install pak\n")
          options(pak.no_extra_messages = TRUE)
          install.packages("pak", repos = "https://r-lib.github.io/p/pak/${{ inputs.pak-version }}/")
          pkg_deps <- pak::pkg_deps("local::${{ inputs.working-directory }}", dependencies = TRUE)
          saveRDS(pkg_deps, ".github/r-depends.rds")
        shell: Rscript {0}

      - name: Get R and OS version
        id: get-version
        run: |
          cat("::set-output name=os-version::", sessionInfo()$running, "\n", sep = "")
          cat("::set-output name=r-version::", R.Version()$version.string, "\n", sep = "")
          cat("::endgroup::\n")
        shell: Rscript {0}

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

      - name: Install dependencies
        run: |
          cat("::group::Install dependencies\n")
          options(pak.no_extra_messages = TRUE)
          local_deps <- pak::local_dev_deps(dependencies = "all")[["ref"]]
          needs <- sprintf("Config/Needs/%s", strsplit("${{ inputs.needs }}", "[[:space:],]+")[[1]])
          needs_deps <- pak::local_dev_deps(dependencies = needs)[["ref"]]
          needs_only_deps <- setdiff(needs_deps, local_deps)
          extra_deps <- strsplit("${{ inputs.extra-packages }}", "[[:space:],]+")[[1]]
          if (Sys.info()[["sysname"]] == "Linux") {
            pak::local_system_requirements(execute = TRUE)
            for (dep in c(needs_only_deps, extra_deps)) {
              pak::pkg_system_requirements(dep, execute = TRUE)
            }
          }
          pak::pkg_install(c(local_deps, needs_only_deps, extra_deps, "sessioninfo"))
          cat("::endgroup::\n")
        shell: Rscript {0}
        working-directory: ${{ inputs.working-directory }}

      - name: Session info
        run: |
          cat("::group::Session info\n")
          options(width = 100)
          sessioninfo::session_info("!installed", include_base = TRUE)
          cat("::endgroup::\n")
        shell: Rscript {0}

      - name: Don't use tar 1.30 from Rtools35 to store the cache
        shell: bash
        run: |
          if command -v /c/Rtools/bin/tar && /c/Rtools/bin/tar --version | grep -q 'tar (GNU tar) 1.30'
            then echo 'C:/Program Files/Git/usr/bin' >> $GITHUB_PATH
          fi