--all-platforms breaks one platform

[skull-squadron]

The presence of BUNDLE_CACHE_ALL_PLATFORMS: true in .bundle/config breaks a multi-platform Gemfile.lock

(Scroll down about 80% for the specific error)

• Ruby 2.3.0p0 + RubyGems 2.6.2 + bundler 1.11.2
• JRuby 9.0.5.0 + RubyGems 2.6.2 + bundler 1.11.2

Minimal example project files here

First, cleanup all bundler project files

rm -rf vendor/{bundle,cache} .bundle/config Gemfile.lock

Next, bundle under MRI (works)

$ chruby 2.3.0
$ bundle
Fetching gem metadata from https://rubygems.org/...........
Fetching version metadata from https://rubygems.org/...
Fetching dependency metadata from https://rubygems.org/..
Resolving dependencies.......
Using rake 11.1.1
Using i18n 0.7.0
Using json 1.8.3
Using minitest 5.8.4
Using thread_safe 0.3.5
Using builder 3.2.2
Using erubis 2.7.0
Using mini_portile2 2.0.0
Using rack 1.6.4
Using mime-types 2.99.1
Using arel 6.0.3
Using bundler 1.11.2
Using concurrent-ruby 1.0.1
Using pg 0.18.4
Using thor 0.19.1
Using tzinfo 1.2.2
Using nokogiri 1.6.7.2
Using rack-test 0.6.3
Using mail 2.6.3
Using sprockets 3.5.2
Using activesupport 4.2.6
Using loofah 2.0.3
Using rails-deprecated_sanitizer 1.0.3
Using globalid 0.3.6
Using activemodel 4.2.6
Using rails-html-sanitizer 1.0.3
Using rails-dom-testing 1.0.7
Using activejob 4.2.6
Using activerecord 4.2.6
Using actionview 4.2.6
Using actionpack 4.2.6
Using actionmailer 4.2.6
Using railties 4.2.6
Using sprockets-rails 3.0.4
Using rails 4.2.6
Bundle complete! 3 Gemfile dependencies, 35 gems now installed.
Use `bundle show [gemname]` to see where a bundled gem is installed.
$ bin/rake -T
rake about                              # List versions of all Rails frameworks and t...
...
rake tmp:create                         # Creates tmp directories for sessions, cache...
$

Then, bundle under JRuby (works)

$ chruby jruby-9.0.5.0
$ bundle
Fetching gem metadata from https://rubygems.org/...........
Fetching version metadata from https://rubygems.org/...
Fetching dependency metadata from https://rubygems.org/..
Resolving dependencies................
Using rake 11.1.1
Using i18n 0.7.0
Using json 1.8.3
Using minitest 5.8.4
Using thread_safe 0.3.5
Using builder 3.2.2
Using erubis 2.7.0
Using nokogiri 1.6.7.2
Using rack 1.6.4
Using mime-types 2.99.1
Using arel 6.0.3
Using jdbc-postgres 9.4.1206
Using bundler 1.11.2
Using concurrent-ruby 1.0.1
Using thor 0.19.1
Using tzinfo 1.2.2
Using loofah 2.0.3
Using rack-test 0.6.3
Using mail 2.6.3
Using sprockets 3.5.2
Using activesupport 4.2.6
Using rails-html-sanitizer 1.0.3
Using rails-deprecated_sanitizer 1.0.3
Using globalid 0.3.6
Using activemodel 4.2.6
Using rails-dom-testing 1.0.7
Using activejob 4.2.6
Using activerecord 4.2.6
Using actionview 4.2.6
Using activerecord-jdbc-adapter 1.3.20
Using actionpack 4.2.6
Using activerecord-jdbcpostgresql-adapter 1.3.20
Using actionmailer 4.2.6
Using railties 4.2.6
Using sprockets-rails 3.0.4
Using rails 4.2.6
Bundle complete! 3 Gemfile dependencies, 36 gems now installed.
Use `bundle show [gemname]` to see where a bundled gem is installed.
$ bin/rake -T
rake about                              # List versions of all Rails frameworks and the environment
...
rake tmp:create                         # Creates tmp directories for sessions, cache, sockets, and pids
$

Next, cache gems under MRI (caches MRI gems but breaks JRuby)

$ chruby 2.3.0
$ bundle cache --all --all-platforms
Updating files in vendor/cache
  * rake-11.1.1.gem
  * i18n-0.7.0.gem
  * json-1.8.3.gem
  * minitest-5.8.4.gem
  * thread_safe-0.3.5.gem
  * tzinfo-1.2.2.gem
  * activesupport-4.2.6.gem
  * builder-3.2.2.gem
  * erubis-2.7.0.gem
  * mini_portile2-2.0.0.gem
  * nokogiri-1.6.7.2.gem
  * rails-deprecated_sanitizer-1.0.3.gem
  * rails-dom-testing-1.0.7.gem
  * loofah-2.0.3.gem
  * rails-html-sanitizer-1.0.3.gem
  * actionview-4.2.6.gem
  * rack-1.6.4.gem
  * rack-test-0.6.3.gem
  * actionpack-4.2.6.gem
  * globalid-0.3.6.gem
  * activejob-4.2.6.gem
  * mime-types-2.99.1.gem
  * mail-2.6.3.gem
  * actionmailer-4.2.6.gem
  * activemodel-4.2.6.gem
  * arel-6.0.3.gem
  * activerecord-4.2.6.gem
  * concurrent-ruby-1.0.1.gem
  * pg-0.18.4.gem
  * thor-0.19.1.gem
  * railties-4.2.6.gem
  * sprockets-3.5.2.gem
  * sprockets-rails-3.0.4.gem
  * rails-4.2.6.gem
$ bin/rake -T
rake about                              # List versions of all Rails frameworks and t...
...
rake tmp:create                         # Creates tmp directories for sessions, cache...
$ chruby jruby-9.0.5.0
$ bin/rake -T
Could not find pg-0.18.4 in any of the sources
Run `bundle install` to install missing gems.
$

^--- Tries to load the pg gem, which is wrong for the JRuby platform and doesn't try to load it without BUNDLE_CACHE_ALL_PLATFORMS as evidenced below:

$ chruby jruby-9.0.5.0
$ sed -i '' '/BUNDLE_CACHE_ALL_PLATFORMS/d' .bundle/config
$ bin/rake -T
rake about                              # List versions of all Rails frameworks and t...
...
rake tmp:create                         # Creates tmp directories for sessions, cache...
$

[coilysiren]

This fix may require waiting for the Better Platform Support milestone

[segiddins]

This ought to be fixed by #4836

[segiddins]

Closing as #4836 has been on master for a while and has now shipped in 1.14