ostruct will be dropped from stdlib in Ruby 3.5.0

[mefellows]

In the latest version of the CLI, the following warning is presented:

<path>/pact/lib/ruby/lib/ruby/3.3.0/json/common.rb:3: warning: ostruct was loaded from the standard library, but will no longer be part of the default gems starting from Ruby 3.5.0.

In general, fixing this should be a matter of making it an explicit dependency, albeit this might just be a matter of updating downstream dependencies.

Example PRs for other projects:

• https://github.com/rubyconfig/config/pull/363/files
• Warning about logger and ostruct in Ruby v3.3.5 rollbar/rollbar-gem#1165
• https://github.com/saml-idp/saml_idp/pull/217/files

[github-actions]

🤖 Great news! We've labeled this issue as smartbear-supported and created a tracking ticket in PactFlow's Jira (PACT-2605). We'll keep work public and post updates here. Meanwhile, feel free to check out our docs. Thanks for your patience!

[YOU54F]

For a bit of history

ruby/json#579

We are using json 2.7.1 (it is part of the standard lib for ruby 3.3.5 which we are using in traveling ruby)

When we move to ruby 3.4.x on release, we can bump the json gem in traveling ruby to 2.7.2 (currently locked in the pact-ruby-standalone repo, so we use std gems, and can build windows packages, as traveling ruby doesn't support building native extensions for windows)

https://github.com/pact-foundation/pact-ruby-standalone/blob/6a912648f56129188e00de2e4c331f636d31cc5b/packaging/Gemfile#L10-L14

https://stdgems.org/3.4.0/

json 2.7.2 makes the requirement on ostruct optional, but ostruct itself is required in a few of our projects explicitly so makes sense to add it.

[YOU54F]

Added the same for other usages of ostruct, adding a dev dep, where it is only used in specs

• fix(test): explicity require ostruct as non stdlib in ruby 3.4.x pact-support#109
• fix(test): explicitly require ostruct as non stdlib in ruby 3.4.x pact-provider-verifier#127
• fix(test): explicitly require ostruct as non stdlib in ruby 3.5.x pact-ruby#323

[YOU54F]

New versions of pact-ruby-standalone / pact-ruby-cli / pact-js-cli now going out

• https://github.com/pact-foundation/pact-ruby-standalone/releases/tag/v2.4.15
• https://github.com/pact-foundation/pact-js-cli/releases/tag/v16.0.2
• https://github.com/pact-foundation/pact-ruby-cli/releases/tag/1.3.0.9

[YOU54F]

we've got one more on windows, this time for fiddle. I've formatted for readability

[15:22:32.551] DEBUG (1620): 

pact-cli@16.0.1: 
D:/a/pact-js-cli/pact-js-cli/
@pact-foundation/pact-cli-windows-x64/standalone/windows-x64-2.4.15/
pact/lib/ruby/lib/ruby/3.3.0/win32/registry.rb:2: 


warning: fiddle was loaded from the standard library, 
but will no longer be part of the default gems starting from Ruby 3.5.0.

Looks to be related to ruby/fiddle#145

replicated in windows builds

• https://github.com/pact-foundation/pact-support/actions/runs/11479843360/job/31946975713#step:5:24
• https://github.com/pact-foundation/pact_broker-client/actions/runs/11479742050/job/31946665334#step:5:24
• https://github.com/pact-foundation/pact-ruby-standalone/actions/runs/11107023393/job/30856706763
• https://github.com/pact-foundation/pact-provider-verifier/actions/runs/11480043621/job/31947604009#step:5:24