diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index 7e581555a35..f9f2d6b588b 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -245,13 +245,13 @@ jobs:
         run: |
           set +e
           rc=0
-          tests="lib-tests lib-suite cli-tests cli-suite"
+          tests="cli-suite"
           if [ "${{ matrix.ghc }}" = "${{ env.GHC_FOR_SOLVER_BENCHMARKS }}" ]; then
             tests="$tests solver-benchmarks-tests solver-benchmarks-run"
           fi
           for test in $tests; do
             echo Validate "$test"
-            sh validate.sh $FLAGS -s "$test" || rc=1
+            sh validate.sh $FLAGS -s "$test" --tasty-arg "PackageTests/IndexCabalFileParseError/cabal.test.hs" || rc=1
             echo End "$test"
           done
           exit $rc
diff --git a/cabal-testsuite/src/Test/Cabal/OutputNormalizer.hs b/cabal-testsuite/src/Test/Cabal/OutputNormalizer.hs
index fb2840be9e6..9e951726fdc 100644
--- a/cabal-testsuite/src/Test/Cabal/OutputNormalizer.hs
+++ b/cabal-testsuite/src/Test/Cabal/OutputNormalizer.hs
@@ -17,8 +17,29 @@ import Data.Array ((!))
 
 import qualified Data.Foldable as F
 
+import System.IO.Unsafe
+
 normalizeOutput :: NormalizerEnv -> String -> String
-normalizeOutput nenv =
+normalizeOutput nenv input =
+  let output = normalizeOutput' nenv input
+   in seq
+        (unsafePerformIO $ do
+          putStrLn $ "===================START===================================="
+          putStrLn $ "normalizerTmpDir: " <> normalizerTmpDir nenv
+          putStrLn $ "normalizerCanonicalTmpDir: " <> normalizerCanonicalTmpDir nenv
+
+          putStrLn $ "-------------------START------------------------------------"
+          putStrLn $ "input: " <> input
+          putStrLn $ "-------------------MID--------------------------------------"
+          putStrLn $ "output: " <> output
+          putStrLn $ "-------------------END--------------------------------------"
+          putStrLn $ "===================END======================================"
+        )
+        output
+{-# NOINLINE normalizeOutput #-}
+
+normalizeOutput' :: NormalizerEnv -> String -> String
+normalizeOutput' nenv =
     -- Normalize backslashes to forward slashes to normalize
     -- file paths
     map (\c -> if c == '\\' then '/' else c)