Ignore failing cabal-fmt test on windows

Author: fendor

plugins/hls-cabal-fmt-plugin/test/Main.hs

@@ -1,12 +1,11 @@
 {-# LANGUAGE CPP               #-}
 {-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE CPP #-}
 module Main
   ( main
   ) where
 
 import qualified Ide.Plugin.CabalFmt as CabalFmt
-import           System.Directory (findExecutable)
+import           System.Directory    (findExecutable)
 import           System.FilePath
 import           Test.Hls
 
@@ -39,7 +38,8 @@ tests found = testGroup "cabal-fmt"
   [ cabalFmtGolden found "formats a simple document" "simple_testdata" "formatted_document" $ \doc -> do
       formatDoc doc (FormattingOptions 2 True Nothing Nothing Nothing)
 
-  , cabalFmtGolden found "formats a document with expand:src comment" "commented_testdata" "formatted_document" $ \doc -> do
+  , knownBrokenOnWindows "expand:src comment bug in cabal-fmt on windows" $
+    cabalFmtGolden found "formats a document with expand:src comment" "commented_testdata" "formatted_document" $ \doc -> do
       formatDoc doc (FormattingOptions 2 True Nothing Nothing Nothing)
 
   , cabalFmtGolden found "formats a document with lib information" "lib_testdata" "formatted_document" $ \doc -> do