Shorten and reduce to two

Author: eddelbuettel

.github/workflows/ci.yaml

@@ -16,8 +16,7 @@ jobs:
         include:
           - { name: container, os: ubuntu-latest, container: rocker/r2u4ci }
           - { name: macos,     os: macos-latest,  openmp: yes }
-          - { name: macos,     os: macos-latest,  openmp: no }
-          - { name: macos,     os: macos-latest,  openmp: alt }
+          #- { name: macos,     os: macos-latest,  openmp: no }
           #- { name: ubuntu,    os: ubuntu-latest }
 
 
@@ -31,24 +30,24 @@ jobs:
       - name: Setup
         uses: eddelbuettel/github-actions/r-ci@master
 
+      # - name: OpenMP for macOS
+      #   if: ${{ matrix.os == 'macos-latest' && matrix.openmp == 'yes' }}
+      #   run: |
+      #     curl -fsSL https://raw.githubusercontent.com/coatless-shell/openmp/main/install-openmp.sh | bash -s -- --yes
+      #     mkdir -p ~/.R
+      #     cat <<EOF > ~/.R/Makevars
+      #     CPPFLAGS += -Xclang -fopenmp
+      #     LDFLAGS += -lomp
+      #     EOF
+      #     cat ~/.R/Makevars
+      #     echo -n "R CMD config CXX: "; R CMD config CXX
+      #     echo -n "R CMD config CPPFLAGS: "; R CMD config CPPFLAGS
+      #     echo -n "R CMD config LDFLAGS: "; R CMD config LDFLAGS
+      #     echo -n "R CMD config SHLIB_CXXLD: "; R CMD config SHLIB_CXXLD
+      #     echo -n "R CMD config SHLIB_CXXLDFLAGS: "; R CMD config SHLIB_CXXLDFLAGS
+
       - name: OpenMP for macOS
         if: ${{ matrix.os == 'macos-latest' && matrix.openmp == 'yes' }}
-        run: |
-          curl -fsSL https://raw.githubusercontent.com/coatless-shell/openmp/main/install-openmp.sh | bash -s -- --yes
-          mkdir -p ~/.R
-          cat <<EOF > ~/.R/Makevars
-          CPPFLAGS += -Xclang -fopenmp
-          LDFLAGS += -lomp
-          EOF
-          cat ~/.R/Makevars
-          echo -n "R CMD config CXX: "; R CMD config CXX
-          echo -n "R CMD config CPPFLAGS: "; R CMD config CPPFLAGS
-          echo -n "R CMD config LDFLAGS: "; R CMD config LDFLAGS
-          echo -n "R CMD config SHLIB_CXXLD: "; R CMD config SHLIB_CXXLD
-          echo -n "R CMD config SHLIB_CXXLDFLAGS: "; R CMD config SHLIB_CXXLDFLAGS
-
-      - name: Alternate OpenMP for macOS
-        if: ${{ matrix.os == 'macos-latest' && matrix.openmp == 'alt' }}
         run: |
           curl -O https://mac.r-project.org/openmp/openmp-17.0.6-darwin20-Release.tar.gz
           sudo tar fvxz openmp-17.0.6-darwin20-Release.tar.gz -C /