[Haskell-cafe] Letting the darcs test fail, if QuickCheck tests fail

[Henning Thielemann]

When following the description on
 http://www.haskell.org/haskellwiki/How_to_write_a_Haskell_program#Add_some_automated_testing:_QuickCheck
  then darcs will run the QuickCheck tests on each 'darcs record', but the
new patch is also accepted by darcs if one of the tests fail. What is the
most simple way to let 'darcs record' fail, when a QuickCheck test fails?