Fixing CI by installing R packages needed for RCall

Author: mattiasvillani

.github/workflows/CI.yml

@@ -35,6 +35,9 @@ jobs:
         with:
           use-public-rspm: true
           r-version: 'release'   # or a fixed version if you prefer
+      - name: Install R packages for RCall
+        run: |
+          Rscript -e 'options(repos = c(CRAN = "https://cloud.r-project.org")); install.packages(c("forecast", "psd"))'
       - run: echo "LD_LIBRARY_PATH=$(R RHOME)/lib:$LD_LIBRARY_PATH" >> $GITHUB_ENV
       - uses: julia-actions/setup-julia@v2
         with:
@@ -65,6 +68,9 @@ jobs:
         with:
           use-public-rspm: true
           r-version: 'release'
+      - name: Install R packages for RCall
+        run: |
+          Rscript -e 'options(repos = c(CRAN = "https://cloud.r-project.org")); install.packages(c("forecast", "psd"))'
       - run: echo "LD_LIBRARY_PATH=$(R RHOME)/lib:$LD_LIBRARY_PATH" >> $GITHUB_ENV
       - uses: julia-actions/cache@v2
       - name: Configure doc environment