From 70dd4d33584a69a1862c9cc1e402de4cddcf7155 Mon Sep 17 00:00:00 2001
From: Nic Crane <thisisnic@gmail.com>
Date: Tue, 27 Jan 2026 15:28:13 -0500
Subject: [PATCH] Try by installing with rig

---
 dev/conbench_envs/hooks.sh | 31 ++++++++++---------------------
 1 file changed, 10 insertions(+), 21 deletions(-)

diff --git a/dev/conbench_envs/hooks.sh b/dev/conbench_envs/hooks.sh
index 5cf75a5c734..a5c5750db94 100755
--- a/dev/conbench_envs/hooks.sh
+++ b/dev/conbench_envs/hooks.sh
@@ -28,8 +28,7 @@ create_conda_env_for_benchmark_build() {
     --file ci/conda_env_unix.txt \
     compilers \
     python="${PYTHON_VERSION}" \
-    pandas \
-    r
+    pandas
 }
 
 activate_conda_env_for_benchmark_build() {
@@ -57,27 +56,17 @@ build_arrow_python() {
   ci/scripts/python_build.sh $(pwd) /tmp/arrow
 }
 
-build_arrow_r() {
-  cat ci/etc/rprofile >> $(R RHOME)/etc/Rprofile.site
-
-  # Ensure CXX20 is configured in R's Makeconf.
-  # conda-forge's R may have empty CXX20 entries even though the compiler supports it.
-  # Arrow requires C++20, so we need to add these settings if missing.
-  MAKECONF="$(R RHOME)/etc/Makeconf"
-  if [ -z "$(R CMD config CXX20)" ]; then
-    echo "*** CXX20 not configured in R, adding it to Makeconf"
-    cat >> "$MAKECONF" << 'EOF'
-
-# Added for Arrow C++20 support
-CXX20 = g++
-CXX20FLAGS = -g -O2 $(LTO)
-CXX20PICFLAGS = -fpic
-CXX20STD = -std=gnu++20
-SHLIB_CXX20LD = $(CXX20) $(CXX20STD)
-SHLIB_CXX20LDFLAGS = -shared
-EOF
+install_r() {
+  if ! command -v R &> /dev/null; then
+    curl -Ls https://github.com/r-lib/rig/releases/download/latest/rig-linux-latest.tar.gz | sudo tar xz -C /usr/local
+    sudo rig add release
+    sudo rig default release
   fi
+}
 
+build_arrow_r() {
+  install_r
+  cat ci/etc/rprofile | sudo tee -a $(R RHOME)/etc/Rprofile.site > /dev/null
   ci/scripts/r_deps.sh $(pwd) $(pwd)
   (cd r; R CMD INSTALL .;)
 }