Fix longstanding gem install failure on JRuby
#5228
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On JRuby, sometimes we get the following error in CI when running a
realworld test that checks that `gem install rails` succeeds:
```
ERROR: While executing gem ... (NoMethodError)
undefined method `ignored=' for nil:NilClass
/home/runner/.rubies/jruby-9.3.2.0/lib/ruby/stdlib/rubygems/stub_specification.rb:193:in `to_spec'
org/jruby/RubyArray.java:2642:in `map'
/home/runner/.rubies/jruby-9.3.2.0/lib/ruby/stdlib/rubygems/specification.rb:758:in `_all'
/home/runner/.rubies/jruby-9.3.2.0/lib/ruby/stdlib/rubygems/specification.rb:956:in `each'
org/jruby/RubyEnumerable.java:1710:in `any?'
/home/runner/.rubies/jruby-9.3.2.0/lib/ruby/stdlib/rubygems/resolver/activation_request.rb:111:in `installed?'
/home/runner/.rubies/jruby-9.3.2.0/lib/ruby/stdlib/rubygems/request_set.rb:173:in `block in install'
```
I'm not sure how this error is happening, but I think there's no need to
copy the `@ignored` instance variable when materializing stub
specifications. This instance variable is used to not print a warning
about missing extensions more than once for each gem upon gem
activation, but as far as I can see, it's only used by methods that work
on specification stubs. Once specifications are materialized, I think
it can be safely ignored.
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Some JRuby users are also running into this, so I'm going to tentatively merge this. |
deivid-rodriguez
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Jan 12, 2022
Fix longstanding `gem install` failure on JRuby (cherry picked from commit 257dbdb)
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What was the end-user or developer problem that led to this PR?
On JRuby, sometimes we get the following error in CI when running a realworld test that checks that
gem install railssucceeds:What is your fix for the problem, implemented in this PR?
I'm not sure how this error is happening, but I think there's no need to copy the
@ignoredinstance variable when materializing stub specifications. This instance variable is used to not print a warning about missing extensions more than once for each gem upon gem activation, but as far as I can see, it's only used by methods that work on specification stubs. Once specifications are materialized, I think it can be safely ignored.Make sure the following tasks are checked