`bundle install` without `development` group crashes when the group contains a plugin

[rhysd]

Describe the problem as clearly as you can

bundle install without development group crashes when the group contains any bundler plugin.

Did you try upgrading rubygems & bundler?

Yes:

• gem --version: 3.5.14
• bundle --version: Bundler version 2.5.14

Post steps to reproduce the problem

Create a new directory and enter it:

mkdir path/to/dir
cd path/to/dir

Create a Gemfile file with the following content:

source 'https://rubygems.org'

group :development do
  plugin 'bundler_install_stats'
end

Which command did you run?

bundle install --path=.bundle --without development

I know that these options are deprecated, but I used them here to reduce the number of steps to reproduce.

What were you expecting to happen?

bundle install is successfully done without installing any plugins/gems.

What actually happened?

The command crashed with the following report template:

NoMethodError: undefined method `full_gem_path' for nil
  /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/site_ruby/3.3.0/bundler/plugin.rb:284:in `save_plugin'
          /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/site_ruby/3.3.0/bundler/plugin.rb:260:in `block in save_plugins'
          /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/site_ruby/3.3.0/bundler/plugin.rb:255:in `each'
          /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/site_ruby/3.3.0/bundler/plugin.rb:255:in `save_plugins'
          /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/site_ruby/3.3.0/bundler/plugin.rb:119:in `block in gemfile_install'
          /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/site_ruby/3.3.0/bundler/settings.rb:158:in `temporary'
          /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/site_ruby/3.3.0/bundler/plugin.rb:104:in `gemfile_install'
          /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/site_ruby/3.3.0/bundler/cli/install.rb:58:in `run'
          /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/site_ruby/3.3.0/bundler/cli.rb:247:in `block in install'
          /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/site_ruby/3.3.0/bundler/settings.rb:158:in `temporary'
          /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/site_ruby/3.3.0/bundler/cli.rb:246:in `install'
          /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/site_ruby/3.3.0/bundler/vendor/thor/lib/thor/command.rb:28:in `run'
          /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/site_ruby/3.3.0/bundler/vendor/thor/lib/thor/invocation.rb:127:in `invoke_command'
          /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/site_ruby/3.3.0/bundler/vendor/thor/lib/thor.rb:527:in `dispatch'
          /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/site_ruby/3.3.0/bundler/cli.rb:35:in `dispatch'
          /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/site_ruby/3.3.0/bundler/vendor/thor/lib/thor/base.rb:584:in `start'
          /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/site_ruby/3.3.0/bundler/cli.rb:29:in `start'
          /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/gems/3.3.0/gems/bundler-2.5.14/exe/bundle:28:in `block in <top (required)>'
          /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/site_ruby/3.3.0/bundler/friendly_errors.rb:117:in `with_friendly_errors'
          /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/gems/3.3.0/gems/bundler-2.5.14/exe/bundle:20:in `<top (required)>'
          /Users/rhysd/.rbenv/versions/3.3.3/bin/bundle:25:in `load'
          /Users/rhysd/.rbenv/versions/3.3.3/bin/bundle:25:in `<main>'

Environment

Bundler       2.5.14
  Platforms   ruby, x86_64-darwin-22
Ruby          3.3.3p89 (2024-06-12 revision f1c7b6f435f1167a0514b39a5f72f55cec4d1426) [x86_64-darwin-22]
  Full Path   /Users/rhysd/.rbenv/versions/3.3.3/bin/ruby
  Config Dir  /Users/rhysd/.rbenv/versions/3.3.3/etc
RubyGems      3.5.14
  Gem Home    /Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/gems/3.3.0
  Gem Path    /Users/rhysd/.gem/ruby/3.3.0:/Users/rhysd/.rbenv/versions/3.3.3/lib/ruby/gems/3.3.0
  User Home   /Users/rhysd
  User Path   /Users/rhysd/.gem/ruby/3.3.0
  Bin Dir     /Users/rhysd/.rbenv/versions/3.3.3/bin
OpenSSL
  Compiled    OpenSSL 3.3.1 4 Jun 2024
  Loaded      OpenSSL 3.3.1 4 Jun 2024
  Cert File   /usr/local/etc/openssl@3/cert.pem
  Cert Dir    /usr/local/etc/openssl@3/certs
Tools
  Git         2.44.0
  RVM         not installed
  rbenv       rbenv 1.2.0
  chruby      not installed

Bundler Build Metadata

Built At          2024-06-21
Git SHA           72920bc230
Released Version  true

Bundler settings

path
  Set for your local app (/Users/rhysd/Develop/github.com/rhysd/tmp/.bundle/config): ".bundle"
without
  Set for your local app (/Users/rhysd/Develop/github.com/rhysd/tmp/.bundle/config): [:development]

Gemfile

Gemfile

source 'https://rubygems.org'

group :development do
  plugin 'bundler_install_stats'
end

Gemfile.lock

GEM
  remote: https://rubygems.org/
  specs:

PLATFORMS
  ruby
  x86_64-darwin-22

DEPENDENCIES

BUNDLED WITH
   2.5.14

If not included with the output of your command, run bundle env and paste the output below

It is included in the previous section.