gistfile1.txt

data "external" "local_tools" {
  program = ["sh", "-c", "${data.template_file.local_tools.rendered}"]
}

data "template_file" "local_tools" {
  template = <<EOF
PATH="$PATH"
LOCAL_TOOLS_PATH="$(mktemp -d)"

platform="$(uname -s)"
case "$platform" in
  Linux*)
    AWS_URL="https://s3.amazonaws.com/aws-cli/awscli-bundle.zip"
    JQ_URL="https://github.com/stedolan/jq/releases/download/jq-1.6/jq-linux64"
    ;;
  Darwin*)
    AWS_URL="https://s3.amazonaws.com/aws-cli/awscli-bundle.zip"
    JQ_URL="https://github.com/stedolan/jq/releases/download/jq-1.6/jq-osx-amd64"
    ;;
esac

>&2 echo Downloading aws
if ! which aws > /dev/null; then
  curl -fL "$AWS_URL" -o "$LOCAL_TOOLS_PATH/awscli-bundle.zip" > /dev/stderr
  if [ $? -ne 0 ]; then
    >&2 echo "failed to $AWS_URL to $LOCAL_TOOLS_PATH/awscli-bundle.zip"
    exit 1
  fi
  unzip -o -d "$LOCAL_TOOLS_PATH" "$LOCAL_TOOLS_PATH/awscli-bundle.zip" > /dev/stderr
  if [ $? -ne 0 ]; then
    >&2 echo "failed to unzip $LOCAL_TOOLS_PATH/awscli-bundle.zip"
    exit 1
  fi
  $LOCAL_TOOLS_PATH/awscli-bundle/install -i "$LOCAL_TOOLS_PATH/.local/lib/aws" -b "$LOCAL_TOOLS_PATH/aws" > /dev/stderr
  if [ $? -ne 0 ]; then
    >&2 echo "failed to install awscli"
    exit 1
  fi
fi

>&2 echo Downloading jq
if ! which jq > /dev/null; then
  curl -fL "$JQ_URL" -o "$LOCAL_TOOLS_PATH/jq" > /dev/stderr
  if [ $? -ne 0 ]; then
    >&2 echo "failed to install jq"
    exit 1
  else
    chmod +x "$LOCAL_TOOLS_PATH/jq"
  fi
fi

echo "{\"path\":\"$PATH:$LOCAL_TOOLS_PATH\"}"
EOF
}