Update R-CMD-check.yaml

Author: jgabry

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

@@ -53,7 +53,7 @@ jobs:
           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
+      - name: Install system dependencies for linux
         if: runner.os == 'Linux'
         env:
           RHUB_PLATFORM: linux-x86_64-ubuntu-gcc
@@ -62,6 +62,15 @@ jobs:
           sysreqs=$(Rscript -e "cat(sysreqs::sysreq_commands('DESCRIPTION'))")
           sudo -s eval "$sysreqs"
 
+      - name: Install system dependencies for mac
+        if: runner.os == 'MacOS'
+        run: |
+           curl -sL  https://mac.r-project.org/libs-4/ |
+           sed -n 's/.*href=\([^>]*x86_64.tar.gz\).*/\1/p' |
+           xargs -I % sh -c 'curl https://mac.r-project.org/libs-4/% --output %; sudo tar fvxz % -C /usr/local --strip 2'
+           ls -la /usr/local/lib
+           ls -la /usr/local/include
+
       - name: Install dependencies
         run: |
           remotes::install_deps(dependencies = TRUE)