Re #6720 Explore integration tests with verbosity

Author: mpilgrem

tests/integration/lib/StackTest.hs

@@ -121,7 +121,9 @@ testDir = getEnv "TEST_DIR"
 stack' :: HasCallStack => [String] -> IO ExitCode
 stack' args = do
   stackEnv <- stackExe
-  run' stackEnv args
+  run' stackEnv argsWithVerbosity
+ where
+  argsWithVerbosity = "--verbose" : args
 
 stack :: HasCallStack => [String] -> IO ()
 stack args = do