[GHC] #2619: Can't build older compiler

[GHC]

#2619: Can't build older compiler
---------------------------------+------------------------------------------
    Reporter:  judah             |        Owner:                  
        Type:  bug               |       Status:  reopened        
    Priority:  normal            |    Milestone:  6.10.1          
   Component:  Compiler          |      Version:  6.11            
    Severity:  normal            |   Resolution:                  
    Keywords:                    |   Difficulty:  Unknown         
    Testcase:                    |           Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |  
---------------------------------+------------------------------------------
Comment (by duncan):

 Whatever system is used, the version of the package that is intended
 should be specified explicitly or the same thing will happen. ghc also
 picks the highest version when you do not tell it otherwise.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2619#comment:7>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler