Rubygems: Bundler 2.2.7 installs binary gems on TruffleRuby, even though Gem.platforms = [Gem::Platform::RUBY]

[eregon]

Describe the problem as clearly as you can

Bundler 2.2.7 installs binary gems on TruffleRuby, even though TruffleRuby sets Gem.platforms = [Gem::Platform::RUBY] in https://github.com/oracle/truffleruby/blob/15ab61bd57a9e6c30b5c58ccd544e04e7e275e8d/lib/truffle/rubygems/defaults/truffleruby.rb#L20-L23

Post steps to reproduce the problem

With Gemfile

source 'https://rubygems.org'

gem "nokogiri"

and latest TruffleRuby (truffleruby-dev), or most likely also with the latest TruffleRuby release,

$ ruby-build truffleruby-dev ~/.rubies/truffleruby-dev 
$ chruby truffleruby-dev

and then:

$ gem install bundler
Fetching bundler-2.2.7.gem
Successfully installed bundler-2.2.7
1 gem installed

$ bundle unstall
Fetching gem metadata from https://rubygems.org/.......
Resolving dependencies....
Using bundler 2.2.7
Fetching racc 1.5.2
Installing racc 1.5.2 with native extensions
Fetching nokogiri 1.11.1 (x86_64-linux)
Installing nokogiri 1.11.1 (x86_64-linux)
Bundle complete! 1 Gemfile dependency, 3 gems now installed.
Bundled gems are installed into `./vendor/bundle`

$ ruby -rnokogiri -e0
/home/eregon/.rubies/truffleruby-dev/lib/mri/rubygems/core_ext/kernel_require.rb:72:in `gem_original_require': Toplevel executable /home/eregon/.rubies/truffleruby-dev/lib/gems/gems/nokogiri-1.11.1-x86_64-linux/lib/nokogiri/2.7/nokogiri.so does not contain bitcode (com.oracle.truffle.llvm.runtime.except.LLVMParserException) (RuntimeError)
Translated to internal error
    from /home/eregon/.rubies/truffleruby-dev/lib/mri/rubygems/core_ext/kernel_require.rb:72:in `require'
    from /home/eregon/.rubies/truffleruby-dev/lib/gems/gems/nokogiri-1.11.1-x86_64-linux/lib/nokogiri.rb:13:in `<top (required)>'
    from <internal:core> core/kernel.rb:234:in `gem_original_require'
    from /home/eregon/.rubies/truffleruby-dev/lib/mri/rubygems/core_ext/kernel_require.rb:168:in `require'
    from <internal:core> core/unbound_method.rb:18:in `call'
    from <internal:core> core/unbound_method.rb:18:in `bind_call'
    from <internal:core> core/kernel.rb:272:in `require'
<internal:core> core/kernel.rb:236:in `gem_original_require': cannot load such file -- nokogiri (LoadError)
    from /home/eregon/.rubies/truffleruby-dev/lib/mri/rubygems/core_ext/kernel_require.rb:92:in `require'
    from <internal:core> core/unbound_method.rb:18:in `call'
    from <internal:core> core/unbound_method.rb:18:in `bind_call'
    from <internal:core> core/kernel.rb:272:in `require'

Bundler chooses the precompiled binary for nokogiri, but that is incorrect because that links against MRI's ABI.

Using gem install does not pick the precompiled binary, as expected:

$ gem install nokogiri
Fetching mini_portile2-2.5.0.gem
Fetching nokogiri-1.11.1.gem
Successfully installed mini_portile2-2.5.0
Building native extensions. This could take a while...
Successfully installed nokogiri-1.11.1
2 gems installed
gem i nokogiri  63.45s user 2.96s system 561% cpu 11.837 total

$ ruby -rnokogiri -e0
OK

@chrisseaton noticed this.
Related: https://github.com/rubygems/rubygems/issues/2945

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

Environment

Bundler       2.2.7
  Platforms   ruby
Ruby          2.7.2p0 (2021-01-27 revision 93211d3fa80390c158a08e9be0f662783e5146ab) [x86_64-linux]
  Full Path   /home/eregon/.rubies/truffleruby-dev/bin/truffleruby
  Config Dir  /home/runner/work/truffleruby-dev-builder/truffleruby-dev-builder/etc
RubyGems      3.1.4
  Gem Home    /home/eregon/.rubies/truffleruby-dev/lib/gems
  Gem Path    /home/eregon/.gem/truffleruby/21.1.0-dev-93211d3f:/home/eregon/.rubies/truffleruby-dev/lib/gems
  User Home   /home/eregon
  User Path   /home/eregon/.gem/truffleruby/21.1.0-dev-93211d3f
  Bin Dir     /home/eregon/.rubies/truffleruby-dev/bin
Tools         
  Git         2.26.2
  RVM         not installed
  rbenv       not installed
  chruby      0.3.9

Bundler Build Metadata

Built At          2021-01-27
Git SHA           7bc7ecb660
Released Version  true

Gemfile

Gemfile

source 'https://rubygems.org'

gem "nokogiri"

Gemfile.lock

GEM
  remote: https://rubygems.org/
  specs:
    nokogiri (1.11.1-x86_64-linux)
      racc (~> 1.4)
    racc (1.5.2)

PLATFORMS
  x86_64-linux

DEPENDENCIES
  nokogiri

BUNDLED WITH
   2.2.7

[deivid-rodriguez]

Thanks for the report @eregon, I'll fix this next week.

[deivid-rodriguez]

In case you get some reports before I fix this and want to provide a workaround, bundle config set --local force_ruby_platform true should do the trick I believe.

[eregon]

Thank you, I can confirm the workaround works:

$ bundle install                    
Fetching gem metadata from https://rubygems.org/.......
Resolving dependencies....
Using bundler 2.2.7
Using racc 1.5.2
Fetching nokogiri 1.11.1 (x86_64-linux)
Installing nokogiri 1.11.1 (x86_64-linux)
Bundle complete! 1 Gemfile dependency, 3 gems now installed.
Use `bundle info [gemname]` to see where a bundled gem is installed.

$ rm -rf Gemfile.lock vendor .bundle
$ bundle config set --local force_ruby_platform true
$ bundle install                                    
Fetching gem metadata from https://rubygems.org/.......
Resolving dependencies...
Using bundler 2.2.7
Using mini_portile2 2.5.0
Using racc 1.5.2
Fetching nokogiri 1.11.1
Installing nokogiri 1.11.1 with native extensions
Bundle complete! 1 Gemfile dependency, 4 gems now installed.
Use `bundle info [gemname]` to see where a bundled gem is installed.