[Draft] ci: Fail fast on pre-commit violations

buildkite/build_distribution.sh

@@ -10,6 +10,30 @@ DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
 "$DIR/clone_repositories.sh"
 
+# Run pre-commit checks on dmd repo if .pre-commit-config.yaml exists
+if [ -f dmd/.pre-commit-config.yaml ]; then
+    echo "--- Running pre-commit checks"
+    pip3 install --quiet --break-system-packages pre-commit
+    pushd dmd
+    export SKIP=no-commit-to-branch
+    pre-commit run --all-files
+    echo "--- Checking changelog entries"
+    check_prefix="$(find changelog -type f -name '*\.dd' -a ! -name 'dmd\.*' -a ! -name 'druntime\.*')"
+    if [ ! -z "${check_prefix}" ]; then
+        echo 'All changelog entries must begin with either `dmd.` or `druntime.`'
+        echo "Found: ${check_prefix}"
+        exit 1
+    fi
+    check_ext="$(find changelog -type f ! -name 'README\.md' -a ! -name '*\.dd')"
+    if [ ! -z "${check_ext}" ]; then
+        echo 'All changelog entries must end with `.dd`'
+        echo "Found: ${check_ext}"
+        exit 1
+    fi
+    popd
+    echo "--- Pre-commit checks passed"
+fi
+
 echo "--- Building dmd"
 if [ -f dmd/src/bootstrap.sh ]; then
     dmd/src/bootstrap.sh