[GHC] #9121: Presence of dyn_o files not checked upon recompilation

[GHC]

#9121: Presence of dyn_o files not checked upon recompilation
-------------------------------------+-------------------------------------
        Reporter:  andreas.abel      |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Driver            |                 Version:  7.8.3
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
-------------------------------------+-------------------------------------
Changes (by thomie):

 * priority:  high => normal
 * component:  Build System => Driver


Comment:

 Does this only happen when you try to install Agda, or with other packages
 as well?

 A smaller test case to reproduce the bug would be great.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9121#comment:2>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler