From e8127877ce8b1bb597e814939698b881e3cfc738 Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Sat, 29 Jan 2022 21:37:50 -0600
Subject: [PATCH] [ci] manually create symlinks to R entrypoints on macOS
 (fixes #4988)

---
 .ci/test_r_package.sh | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/.ci/test_r_package.sh b/.ci/test_r_package.sh
index e7d36e59ceeb..f18e7bbf1e27 100755
--- a/.ci/test_r_package.sh
+++ b/.ci/test_r_package.sh
@@ -81,6 +81,17 @@ if [[ $OS_NAME == "macos" ]]; then
         -pkg $(pwd)/R.pkg \
         -target /
 
+    # Older R versions (<= 4.1.1) on newer macOS (>= 11.0.0) cannot create the necessary symlinks.
+    # See https://github.com/r-lib/actions/issues/412.
+    sudo ln \
+        -sf \
+        /Library/Frameworks/R.framework/Resources/bin/R \
+        /usr/local/bin/R
+    sudo ln \
+        -sf \
+        /Library/Frameworks/R.framework/Resources/bin/Rscript \
+        /usr/local/bin/Rscript
+
     # Fix "duplicate libomp versions" issue on Mac
     # by replacing the R libomp.dylib with a symlink to the one installed with brew
     if [[ $COMPILER == "clang" ]]; then