Fix #682 gemspec Faraday constraint regression

Author: crmne

ruby_llm.gemspec

@@ -42,15 +42,10 @@ Gem::Specification.new do |spec|
   # Runtime dependencies
   spec.add_dependency 'base64'
   spec.add_dependency 'event_stream_parser', '~> 1'
-  if Gem::Version.new(Gem.ruby_version) >= Gem::Version.new('4.0')
-    spec.add_dependency 'faraday', '>= 2.0'
-    spec.add_dependency 'faraday-retry', '>= 2.0'
-  else
-    spec.add_dependency 'faraday', ENV['FARADAY_VERSION'] || '>= 1.10.0'
-    spec.add_dependency 'faraday-retry', '>= 1'
-  end
+  spec.add_dependency 'faraday', ENV['FARADAY_VERSION'] || '>= 1.10.0'
   spec.add_dependency 'faraday-multipart', '>= 1'
   spec.add_dependency 'faraday-net_http', '>= 1'
+  spec.add_dependency 'faraday-retry', '>= 1'
   spec.add_dependency 'marcel', '~> 1'
   spec.add_dependency 'ruby_llm-schema', '~> 0'
   spec.add_dependency 'zeitwerk', '~> 2'

spec/ruby_llm_gemspec_spec.rb

@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+# rubocop:disable RSpec/DescribeClass
+RSpec.describe 'ruby_llm.gemspec' do
+  subject(:gemspec) { Gem::Specification.load(File.expand_path('../ruby_llm.gemspec', __dir__)) }
+
+  def runtime_dependency(name)
+    gemspec.dependencies.find { |dependency| dependency.type == :runtime && dependency.name == name }
+  end
+
+  it 'keeps faraday compatible with Ruby < 4.0' do
+    expect(runtime_dependency('faraday').requirement.to_s).to eq('>= 1.10.0')
+  end
+
+  it 'keeps faraday-retry compatible with Faraday v1 and v2' do
+    expect(runtime_dependency('faraday-retry').requirement.to_s).to eq('>= 1')
+  end
+end
+# rubocop:enable RSpec/DescribeClass