ci: Rethink versions matrix, store in file

.github/workflows/R-CMD-check.yaml

@@ -56,6 +56,9 @@ jobs:
       - uses: ./.github/workflows/custom/after-install
         if: hashFiles('.github/workflows/custom/after-install/action.yml') != ''
 
+      - uses: ./.github/workflows/versions-matrix
+        if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository
+
       - uses: ./.github/workflows/update-snapshots
         if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository
 
@@ -139,27 +142,7 @@ jobs:
           use-public-rspm: true
 
       - id: set-matrix
-        uses: ./.github/workflows/versions-matrix
-
-  check-versions-matrix:
-    runs-on: ubuntu-22.04
-    needs: versions-matrix
-
-    name: Check versions deps
-
-    if: ${{ needs.versions-matrix.outputs.matrix != '' }}
-
-    steps:
-      - name: Install json2yaml
-        run: |
-          sudo npm install -g json2yaml
-
-      - name: Check matrix definition
-        run: |
-          matrix='${{ needs.versions-matrix.outputs.matrix }}'
-          echo $matrix
-          echo $matrix | jq .
-          echo $matrix | json2yaml
+        uses: ./.github/workflows/versions-matrix-read
 
   rcc-full:
     needs:

.github/workflows/commit/action.yml

@@ -22,7 +22,7 @@ runs:
             git stash pop
           fi
           git add .
-          git commit -m "Auto-update from GitHub Actions"$'\n'$'\n'"Run: ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}/actions/runs/${GITHUB_RUN_ID}"
+          git commit -m "chore: Auto-update from GitHub Actions"$'\n'$'\n'"Run: ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}/actions/runs/${GITHUB_RUN_ID}"
           git push -u origin HEAD
           echo sha=$(git rev-parse HEAD) >> $GITHUB_OUTPUT
         fi

.github/workflows/versions-matrix-read/action.yml

@@ -0,0 +1,13 @@
+name: "Actions to read a matrix with all R and OS versions, computed with the versions-matrix action"
+outputs:
+  matrix:
+    description: "Generated matrix"
+    value: ${{ steps.set-matrix.outputs.matrix }}
+
+runs:
+  using: "composite"
+  steps:
+    - id: set-matrix
+      run: |
+        echo matrix=$(cat .github/versions-matrix.json || echo '[]') >> $GITHUB_OUTPUT
+      shell: bash

.github/workflows/versions-matrix/action.R

@@ -1,24 +1,3 @@
-# - {os: macos-latest,   r: 'release'}
-#
-# - {os: ubuntu-20.04,   r: 'release'}
-#
-# # Use older ubuntu to maximise backward compatibility
-# - {os: ubuntu-22.04,   r: 'devel',     http-user-agent: 'release'}
-# - {os: ubuntu-22.04,   r: 'release',   covr: true,                  desc: 'with covr'}
-# - {os: ubuntu-22.04,   r: 'oldrel-1'}
-#
-# # Begin custom: R 3.6
-# - {os: ubuntu-22.04,   r: 'oldrel-2'}
-# # End custom: R 3.6
-#
-# # Begin custom: R 3.5
-# - {os: ubuntu-22.04,   r: 'oldrel-3'}
-# # End custom: R 3.5
-#
-# # Begin custom: R 3.4
-# - {os: ubuntu-22.04,   r: 'oldrel-4'}
-# # End custom: R 3.4
-
 # FIXME: Dynamic lookup by parsing https://svn.r-project.org/R/tags/
 r_versions <- c("devel", paste0("4.", 4:0))
 macos <- data.frame(os = "macos-latest", r = r_versions[2:3])
@@ -51,7 +30,5 @@ to_json <- function(x) {
 configs <- unlist(lapply(include_list, to_json))
 json <- paste0('{"include":[', paste(configs, collapse = ","), ']}')
 
-if (Sys.getenv("GITHUB_OUTPUT") != "") {
-  writeLines(paste0("matrix=", json), Sys.getenv("GITHUB_OUTPUT"))
-}
+writeLines(json, ".github/version-matrix.json")
 writeLines(json)

.github/workflows/versions-matrix/action.yml

@@ -1,8 +1,4 @@
 name: "Actions to compute a matrix with all R and OS versions"
-outputs:
-  matrix:
-    description: "Generated matrix"
-    value: ${{ steps.set-matrix.outputs.matrix }}
 
 runs:
   using: "composite"