Gemfile w/ duplicate path gems fails with Bundler > 2.2.7

[internets]

When #1132 was merged our build began to fail due to a bug introduce in Bundler 2.2.8. I submitted a bugfix PR that was just incorporated in the latest 2.2.12 release. I understand that updating bundler in the ruby buildpack is not done lightly, so please let me know if an update is not in the cards :)

If 2.2.12 doesn't pass muster we will happily maintain a monkeypatch with a version check to remind us to remove it when it is updated, so no rush!

Bundler 2.2.12 changelog: https://github.com/rubygems/rubygems/blob/bundler-v2.2.12/bundler/CHANGELOG.md#2212-march-1-2021

[schneems]

Working on this in #1140

I'll likely not release until next week though.

[schneems]

Tests are failing on that branch but still work on main:

       remote:        Gem::Ext::BuildError: ERROR: Failed to build gem native extension.        
       remote:                
       remote:        current directory:        
       remote:        /tmp/build_392437cc/vendor/bundle/jruby/2.5.0/gems/naether-0.15.7-java        
       remote:        jrake        
       remote:        RUBYARCHDIR=/tmp/build_392437cc/vendor/bundle/jruby/2.5.0/extensions/universal-java-1.8/2.5.0/naether-0.15.7-java        
       remote:        RUBYLIBDIR=/tmp/build_392437cc/vendor/bundle/jruby/2.5.0/extensions/universal-java-1.8/2.5.0/naether-0.15.7-java        
       remote:        sh: 1: jrake: not found        

This might be a regression in bundler. I'll have to investigate more.

[internets]

Thanks! No rush, glad to know it's in progress.

That test failure does look like a bundler regression in 2.2.12. I suspect it's fixed by rubygems/rubygems#4428

[internets]

Closed by #1140 -- thanks!