repro.sh

#! /usr/bin/env bash

# Clear Bazel cache to demonstrate missing outfiles if needed
# sudo rm -rf ~/.cache/bazel

export GEM_HOME="${HOME}/rules_ruby_bug/.gem"
export BUNDLE_PATH="${GEM_HOME}"

rm -rf "${BUNDLE_PATH}"

# Generate Gemfile.lock if needed:
# bazel run --enable_workspace @ruby//:bundle -- update

# Run rb_bundle_install target
bazel build --enable_workspace //:repro

# Missing snakeyaml-1.31.jar in bazel outfiles
find "$(bazel info output_path)/k8-fastbuild/bin/external" -type f -name snakeyaml-1.31.jar

# bundle install with binary provided by bazel rule shows additional logs:
# "
# using maven for the first time results in maven
# downloading all its default plugin and can take time.
# as those plugins get cached on disk and further execution
# of maven is much faster then the first time.

#       org.yaml:snakeyaml:1.31:compile
# "

# Showing that additional gem building steps were executed:
# https://github.com/ruby/psych/blob/master/psych.gemspec#L71
bazel run --enable_workspace @ruby//:bundle -- install --path "${BUNDLE_PATH}"

# Returns:
# ./rules_ruby_bug/.gem/jruby/3.1.0/gems/psych-3.3.3-java/lib/org/yaml/snakeyaml/1.31/snakeyaml-1.31.jar
find "${BUNDLE_PATH}" -type f -name snakeyaml-1.31.jar