ci: Cleanup and fix macOS (#1661)

Author: krlmlr

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

@@ -250,8 +250,6 @@ jobs:
       fail-fast: false
       matrix: ${{fromJson(needs.rcc-smoke.outputs.versions-matrix)}}
 
-    timeout-minutes: 240
-
     steps:
       - uses: actions/checkout@v4
         with:
@@ -291,7 +289,6 @@ jobs:
           results: ${{ runner.os }}-r${{ matrix.r }}
 
       - uses: ./.github/workflows/covr
-        timeout-minutes: 240
         if: ${{ matrix.covr }}
         with:
           token: ${{ secrets.CODECOV_TOKEN }}

.github/workflows/install/action.yml

@@ -60,6 +60,11 @@ runs:
         # echo "_R_CHECK_CRAN_INCOMING_=true" | tee -a $GITHUB_ENV
         echo "_R_CHECK_CRAN_INCOMING_SKIP_LARGE_VERSION_=true" | tee -a $GITHUB_ENV
         echo "_R_CHECK_FORCE_SUGGESTS_=false" | tee -a $GITHUB_ENV
+      shell: bash
+
+    - name: Set environment variables (non-macOS only)
+      if: runner.os != 'macOS'
+      run: |
         echo "_R_CHECK_THINGS_IN_OTHER_DIRS_=true" | tee -a $GITHUB_ENV
       shell: bash