[xmonad] Issue 477 in xmonad: report missing GHC

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Updates:
	Status: Started
	Labels: Type-Defect Component-Core

Comment #1 on issue 477 by vogt.a... at gmail.com: report missing GHC
http://code.google.com/p/xmonad/issues/detail?id=477

There's this applied patch for the same complaint. With a missing ghc (and  
if the shell is bash), you get an ExitCode 127.

Tue Apr 26 02:23:41 EDT 2011  Jens Petersen
   * output error code when xmonad.hs compile fails without any error output

   Currently if there is no ghc on the path say for some reason,
   xmonad.error is empty.  This patch makes
   it output the exitcode code when the compile process fails
   without any error output.  (It might be easier just to spawn
   a shell to get "ghc: command not found" output for free.)