[GHC] #8251: Validate submodule references during pre-receive hook

[GHC]

#8251: Validate submodule references during pre-receive hook
-------------------------------------+------------------------------------
        Reporter:  hvr               |            Owner:  hvr
            Type:  task              |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  Trac & Git        |          Version:  7.6.3
      Resolution:                    |         Keywords:  admin git
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
-------------------------------------+------------------------------------

Comment (by hvr):

 Another idea: to avoid updating submodule refs by accident (which has
 happened a few times already), the respective commit message ought contain
 the word "submodule" or maybe "update(s) submodule" as a safe-guard.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8251#comment:3>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler