Running a command like that is actually removing any previous default
bundler specs in the default RubyGems installation (outside of destdir).
It should instead only modify destdir.
5ed275383c
Since a few commits ago, we no longer call `Gem::Specification.reset`
after each invocation of `Gem::Installer#install`. This means we don't
call it when the default Bundler is installed during `gem update
--system`. This causes no issues until the end of the upgrade process
when:
* The previous default Bundler spec is removed from disk.
* All specification stubs are turned into real specifications by loading
them from disk. But the one for Bundler no longer exists so
materializes to `nil` and regenerating binstubs crashes like this:
```
Bundler 2.4.0.dev installed
RubyGems 3.4.0.dev installed
Regenerating binstubs
ERROR: While executing gem ... (NoMethodError)
undefined method `platform' for nil:NilClass
/Users/deivid/Code/rubygems/rubygems/lib/rubygems/commands/pristine_command.rb:116:in `block in execute'
/Users/deivid/Code/rubygems/rubygems/lib/rubygems/specification.rb:981:in `block in each'
/Users/deivid/Code/rubygems/rubygems/lib/rubygems/specification.rb:980:in `each'
/Users/deivid/Code/rubygems/rubygems/lib/rubygems/specification.rb:980:in `each'
/Users/deivid/Code/rubygems/rubygems/lib/rubygems/commands/pristine_command.rb:116:in `map'
/Users/deivid/Code/rubygems/rubygems/lib/rubygems/commands/pristine_command.rb:116:in `each'
/Users/deivid/Code/rubygems/rubygems/lib/rubygems/commands/pristine_command.rb:116:in `select'
/Users/deivid/Code/rubygems/rubygems/lib/rubygems/commands/pristine_command.rb:116:in `execute'
/Users/deivid/Code/rubygems/rubygems/lib/rubygems/command.rb:323:in `invoke_with_build_args'
/Users/deivid/Code/rubygems/rubygems/lib/rubygems/command.rb:301:in `invoke'
/Users/deivid/Code/rubygems/rubygems/lib/rubygems/commands/setup_command.rb:604:in `regenerate_binstubs'
/Users/deivid/Code/rubygems/rubygems/lib/rubygems/commands/setup_command.rb:183:in `execute'
/Users/deivid/Code/rubygems/rubygems/lib/rubygems/command.rb:323:in `invoke_with_build_args'
/Users/deivid/Code/rubygems/rubygems/lib/rubygems/command_manager.rb:185:in `process_args'
/Users/deivid/Code/rubygems/rubygems/lib/rubygems/command_manager.rb:149:in `run'
/Users/deivid/Code/rubygems/rubygems/lib/rubygems/gem_runner.rb:51:in `run'
setup.rb:33:in `<main>'
```
We fix it by more carefully managing the removal of the previous default
Bundler gem.
9989f6d5af
