only bump version for changed modules.

.github/workflows/update-readme.yaml

@@ -23,7 +23,7 @@ jobs:
         run: echo "TAG=$(git describe --tags --abbrev=0 | sed 's/^v//')" >> $GITHUB_OUTPUT
 
       - name: Run update script
-        run: ./update-readme.sh
+        run: ./update-version.sh
 
       - name: Create Pull Request
         id: create-pr

update-version.sh

@@ -6,16 +6,31 @@
 
 set -euo pipefail
 
-LATEST_TAG=$(git describe --abbrev=0 --tags | sed 's/^v//') || exit $?
+current_tag=$(git describe --tags --abbrev=0)
+previous_tag=$(git describe --tags --abbrev=0 $current_tag^)
+changed_files=$(git diff --name-only "$previous_tag" "$current_tag")
 
-find . -name README.md | while read -r file; do
-  tmpfile=$(mktemp /tmp/tempfile.XXXXXX)
-  awk -v tag="$LATEST_TAG" '{
-    if ($1 == "version" && $2 == "=") {
-      sub(/"[^"]*"/, "\"" tag "\"")
-      print
-    } else {
-      print
-    }
-  }' "$file" > "$tmpfile" && mv "$tmpfile" "$file"
+changed_dirs=()
+for file in $changed_files; do
+  dir=$(dirname "$file")
+  changed_dirs+=("$dir")
 done
+changed_dirs=($(printf "%s\n" "${changed_dirs[@]}" | sort -u))
+
+LATEST_TAG=$(git describe --abbrev=0 --tags | sed 's/^v//') || exit $?
+
+for dir in "${changed_dirs[@]}"; do
+  if [[ -f "$dir/README.md" ]]; then
+    echo "Bumping version in $dir/README.md"
+    file="$dir/README.md"
+    tmpfile=$(mktemp /tmp/tempfile.XXXXXX)
+    awk -v tag="$LATEST_TAG" '{
+      if ($1 == "version" && $2 == "=") {
+        sub(/"[^"]*"/, "\"" tag "\"")
+        print
+      } else {
+        print
+      }
+    }' "$file" > "$tmpfile" && mv "$tmpfile" "$file"
+  fi
+done