Merge pull request #8987 from haskell/quickcheck-no-all

Fix QuickCheck instance of PackageName to not produce 'all' (fix #8986)

Author: mergify[bot]

Cabal-QuickCheck/src/Test/QuickCheck/Instances/Cabal.hs

@@ -74,7 +74,7 @@ instance Arbitrary PackageName where
     arbitrary = mkPackageName . intercalate "-" <$> shortListOf1 2 nameComponent
       where
         nameComponent = shortListOf1 5 (elements packageChars)
-                        `suchThat` (not . all isDigit)
+                        `suchThat` (liftA2 (&&) (not . all isDigit) (/= "all"))
         packageChars  = filter isAlphaNum ['\0'..'\127']
 
 instance Arbitrary PackageIdentifier where