feat: use a single r-version-to-build.txt file

.crow/build.yaml

@@ -97,9 +97,9 @@ steps:
     image: alpine:3.22
     commands:
       - apk add -q --no-cache curl
-      - curl -s https://raw.githubusercontent.com/Homebrew/homebrew-core/master/Formula/r/r.rb | grep -o 'R-[0-9]*\.[0-9]*\.[0-9]*' | tr -d 'R-' | tr -d '"' | head -n 1 > r-release-version.txt
-      - echo "4.2.3" > r-release-version.txt
-      - cat r-release-version.txt
+      - curl -s https://raw.githubusercontent.com/Homebrew/homebrew-core/master/Formula/r/r.rb | grep -o 'R-[0-9]*\.[0-9]*\.[0-9]*' | tr -d 'R-' | tr -d '"' | head -n 1 > r-version-to-build.txt
+      - echo "4.2.3" > r-version-to-build.txt
+      - cat r-version-to-build.txt
     backend_options:
       kubernetes:
         resources:
@@ -128,8 +128,12 @@ steps:
     image: alpine:3.22
     commands:
       - apk add -q --no-cache aws-cli
-      - aws s3 ls s3://devxy-r-builds/${PLATFORM_ID}/ | grep ${ARCH_ID} | tail -1 | awk '{print $NF}' | cut -c 3-7 > r_build_latest.txt
-      - cat r_build_latest.txt
+      - |
+          VERSION=$(cat r-version-to-build.txt)
+          aws s3 ls s3://devxy-r-builds/${PLATFORM_ID}/ | \
+            awk -v arch="${ARCH_ID}" -v ver="${VERSION}" \
+              '$0 ~ arch && $0 ~ ver {print substr($NF, 3, 5)}' > r-version-s3.txt
+      - cat r-version-s3.txt
     backend_options:
       kubernetes:
         nodeSelector:
@@ -149,10 +153,10 @@ steps:
       DOCKER_HOST: tcp://docker:2375
     commands: |
       # docker info
-      if [ ! -s r_build_latest.txt ] || [ ! "$(cat r-release-version.txt)" = "$(cat r_build_latest.txt)" ]; then
+      if ! grep -qF "$(cat r-version-to-build.txt)" r-version-s3.txt; then
         apk add -q --no-cache py3-pip make just aws-cli docker-compose
         pip3 install -q b2 --break-system-packages
-        just build-r-${PLATFORM} $(cat r-release-version.txt)
+        just build-r-${PLATFORM} $(cat r-version-to-build.txt)
       fi
     backend_options:
       kubernetes: