bug in ghc-6.4-src\libraries\base\Data\Version.hs

[Bulat Ziganshin]

bug in ghc-6.4-src\libraries\base\Data\Version.hs:

instance Eq Version where
  v1 == v2  =  versionBranch v1 == versionBranch v2 
                && all (`elem` (versionTags v2)) (versionTags v1)
                -- tags may be in any order

                
this really checks that v1.tags is subset of v2.tags. must be changed to

import Data.List        ( intersperse, sort )

instance Eq Version where
  v1 == v2  =  versionBranch v1 == versionBranch v2 
                && sort (versionTags v1) == sort (versionTags v2)
                -- tags may be in any order

-- 
Best regards,
 Bulat                          mailto:bulatz at HotPOP.com