From 16e58b8875a4077e9e1572d228a27f573aa41331 Mon Sep 17 00:00:00 2001
From: Elodie Lander <lander89@gmail.com>
Date: Sat, 15 Jul 2023 06:07:30 -0500
Subject: [PATCH] Use more System.FilePath functions

---
 ghcide/src/Development/IDE/Core/Actions.hs   | 4 ++--
 ghcide/src/Development/IDE/Core/Shake.hs     | 5 ++++-
 ghcide/src/Development/IDE/Types/HscEnvEq.hs | 2 +-
 3 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/ghcide/src/Development/IDE/Core/Actions.hs b/ghcide/src/Development/IDE/Core/Actions.hs
index c071c08647a..f628a3110bf 100644
--- a/ghcide/src/Development/IDE/Core/Actions.hs
+++ b/ghcide/src/Development/IDE/Core/Actions.hs
@@ -40,7 +40,7 @@ import           Language.LSP.Protocol.Types          (DocumentHighlight (..),
                                                        SymbolInformation (..))
 import           Language.LSP.Server                  (resRootPath)
 import           System.Directory                     (createDirectoryIfMissing, doesFileExist)
-import           System.FilePath                      ((</>), takeDirectory)
+import           System.FilePath                      ((</>), (<.>), takeDirectory)
 
 
 -- | Generates URIs for files in dependencies, but not in the
@@ -80,7 +80,7 @@ lookupMod HieDbWriter{indexQueue} hieFile moduleName uid _boot = MaybeT $ do
         writeOutDir :: FilePath
         writeOutDir = projectRoot </> ".hls" </> "dependencies" </> show uid
         writeOutFile :: FilePath
-        writeOutFile = moduleNameSlashes moduleName ++ ".hs"
+        writeOutFile = moduleNameSlashes moduleName <.> "hs"
         writeOutPath :: FilePath
         writeOutPath = writeOutDir </> writeOutFile
         moduleUri :: Uri
diff --git a/ghcide/src/Development/IDE/Core/Shake.hs b/ghcide/src/Development/IDE/Core/Shake.hs
index 9a90df4eb34..9852181ed2d 100644
--- a/ghcide/src/Development/IDE/Core/Shake.hs
+++ b/ghcide/src/Development/IDE/Core/Shake.hs
@@ -1132,9 +1132,12 @@ data SourceFileOrigin = FromProject | FromDependency
 
 getSourceFileOrigin :: NormalizedFilePath -> SourceFileOrigin
 getSourceFileOrigin f =
-    case isInfixOf ".hls/dependencies" (show f) of
+    case [".hls", "dependencies"] `isInfixOf` (splitDirectories file) of
         True -> FromDependency
         False -> FromProject
+    where
+        file :: FilePath
+        file = fromNormalizedFilePath f
 
 defineEarlyCutoff'
     :: forall k v. IdeRule k v
diff --git a/ghcide/src/Development/IDE/Types/HscEnvEq.hs b/ghcide/src/Development/IDE/Types/HscEnvEq.hs
index c4d5ac7560d..9befb13fe0a 100644
--- a/ghcide/src/Development/IDE/Types/HscEnvEq.hs
+++ b/ghcide/src/Development/IDE/Types/HscEnvEq.hs
@@ -151,7 +151,7 @@ newHscEnvEqWithImportPaths envImportPaths recorder se hscEnv deps = do
         indexModuleHieFile hieDir m = do
             let hiePath :: NormalizedFilePath
                 hiePath = toNormalizedFilePath' $
-                  hieDir </> moduleNameSlashes (moduleName m) ++ ".hie"
+                  hieDir </> moduleNameSlashes (moduleName m) <.> "hie"
             hieCheck <- checkHieFile recorder se "newHscEnvEqWithImportPaths" hiePath
             case hieCheck of
                 HieFileMissing -> return ()