Implicit pstore dependency

[bogdan]

Environment details

• OS: MacOS
• Ruby version: 3.4.3
• Gem name and version: googleauth-1.12.2

Code example

require 'googleauth/stores/file_token_store'

Makes a warning:

/Users/bogdan/.rvm/rubies/ruby-3.4.3/lib/ruby/3.4.0/yaml/store.rb:8: warning: pstore was loaded from the standard library, but will no longer be part of the default gems starting from Ruby 3.5.0.
You can add pstore to your Gemfile or gemspec to silence this warning.

[bschembri]

This is now a runtime failure on Ruby 4.0.0 (not just a warning).

Environment:

• Ruby: 4.0.0
• googleauth: 1.16.0

Failure:
Google::Auth::Stores::FileTokenStore raises:

NameError: uninitialized constant Psych::Store
  from googleauth (1.16.0) lib/googleauth/stores/file_token_store.rb:30:in `Google::Auth::Stores::FileTokenStore#initialize'

Offending line:

@store = YAML::Store.new path

Example:

Gemfile

source "https://rubygems.org"
gem "googleauth", "1.16.0"

Run:

bundle exec ruby -e 'require "googleauth/stores/file_token_store"; Google::Auth::Stores::FileTokenStore.new(file: "tokens.yml")'

Workaround:
Adding gem "pstore" to the Gemfile fixes it

Fix:
googleauth could explicitly require "pstore" before using YAML::Store (and/or add pstore as a runtime dependency)
This would prevent Ruby 4 users from having to add pstore manually.

[mishina2228]

Same here on Ruby 4.0.1.
uninitialized constant Psych::Store

As mentioned above, Ruby 4 no longer ships with pstore, and my app didn't have it listed as a dependency.
Adding pstore fixed it.

gem 'pstore'

Just leaving this here in case it helps others.