Don't declare ActiveRecord gem dependency for now

Thorfile

@@ -29,7 +29,10 @@ and query generation.
       s.has_rdoc = true
       s.extra_rdoc_files = %w[README.markdown]
 
-      s.add_dependency "activerecord", ">= 3.0pre"
+      # Arel required ActiveRecord, but we're not declaring it to avoid a
+      # circular dependency chain. The solution is for ActiveRecord to release
+      # the connection adapters which Arel uses in a separate gem
+      # s.add_dependency "activerecord", ">= 3.0pre"
       s.add_dependency "activesupport", ">= 3.0pre"
     end
   end

arel.gemspec

@@ -227,14 +227,11 @@ and query generation.}
     s.specification_version = 3
 
     if Gem::Version.new(Gem::RubyGemsVersion) >= Gem::Version.new('1.2.0') then
-      s.add_runtime_dependency(%q<activerecord>, [">= 3.0pre"])
       s.add_runtime_dependency(%q<activesupport>, [">= 3.0pre"])
     else
-      s.add_dependency(%q<activerecord>, [">= 3.0pre"])
       s.add_dependency(%q<activesupport>, [">= 3.0pre"])
     end
   else
-    s.add_dependency(%q<activerecord>, [">= 3.0pre"])
     s.add_dependency(%q<activesupport>, [">= 3.0pre"])
   end
 end