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Error if we're not the first buildpack #14

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Error if we're not the first buildpack #14

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12 changes: 12 additions & 0 deletions bin/compile
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,18 @@ if [ -f $ENV_DIR/PROJECT_PATH ]; then
PROJECT_PATH=`cat $ENV_DIR/PROJECT_PATH`
if [ -d $BUILD_DIR/$PROJECT_PATH ]; then
echo "-----> Subdir buildpack in $PROJECT_PATH"

if [ -n "$(ls -A $BUILD_DIR/.profile.d 2>/dev/null)" ]; then
echo " Another buildpack seems to have run"
echo " before the subdir buildpack. This"
echo " may cause unexpected problems."
echo ""
echo " Ensure '$ heroku buildpacks' lists"
echo " the subdir buildpack first and try"
echo " again."
exit 1
fi

echo " creating cache: $CACHE_DIR"
mkdir -p $CACHE_DIR
TMP_DIR=`mktemp -d $CACHE_DIR/subdirXXXXX`
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