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Allow to keep local dependencies #11

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Allow to keep local dependencies #11

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326b836
Allow ignoring paths
gregorw May 20, 2022
f4d00c4
Typo
gregorw May 21, 2022
45d108b
Debug
gregorw May 25, 2022
bbae320
Skip extra removals
gregorw Jun 1, 2022
66a22f8
Remove debugging
gregorw Jun 1, 2022
ccc2eff
Docs
gregorw Jun 1, 2022
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2 changes: 2 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,8 @@ Add as a first buildpack in the chain. Set `PROJECT_PATH` environment variable t
2. `heroku buildpacks:set https://github.com/timanovsky/subdir-heroku-buildpack`
3. `heroku buildpacks:add heroku/nodejs` or whatever buildpack you need for your application
4. `heroku config:set PROJECT_PATH=projects/nodejs/frontend` pointing to what you want to be a project root.
5. `heroku config:set KEEPS=./dependencies:./vendor` to specify what you want to keep using GLOBIGNORE syntax.
5. `heroku config:set UNLINK=projects/nodejs/frontend/dependencies` to unlink a symlink that may be used.
5. Deploy your project to Heroku.

# How it works
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29 changes: 25 additions & 4 deletions bin/compile
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Expand Up @@ -12,14 +12,37 @@ 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"

# Optionally, unlink a folder. This may be needed to keep Gemfiles, etc. unchanged.
UNLINK=''
if [ -f $ENV_DIR/UNLINK ]; then
UNLINK=`cat $ENV_DIR/UNLINK`
echo " unlinking $BUILD_DIR/$UNLINK"
unlink $BUILD_DIR/$UNLINK
fi

echo " creating cache: $CACHE_DIR"
mkdir -p $CACHE_DIR
TMP_DIR=`mktemp -d $CACHE_DIR/subdirXXXXX`
echo " created tmp dir: $TMP_DIR"
echo " moving working dir: $PROJECT_PATH to $TMP_DIR"
cp -R $BUILD_DIR/$PROJECT_PATH/. $TMP_DIR/
echo " cleaning build dir $BUILD_DIR"
rm -rf $BUILD_DIR/*

echo " cleaning build dir $BUILD_DIR"

# Optionally, keep some files using GLOBIGNORE pattern
KEEPS=''
if [ -f $ENV_DIR/KEEPS ]; then
KEEPS=`cat $ENV_DIR/KEEPS`
echo " ignoring $KEEPS"
fi

# Enter build dir
cd $BUILD_DIR
(GLOBIGNORE=".:..:.buildpacks:$KEEPS"; rm -rf ./*)
cd -
# End entering build dir

echo " copying preserved work dir from cache $TMP_DIR to build dir $BUILD_DIR"
cp -R $TMP_DIR/. $BUILD_DIR/
echo " cleaning tmp dir $TMP_DIR"
Expand All @@ -30,5 +53,3 @@ fi

echo "PROJECT_PATH is undefined"
exit 1