Make sure directories exist

app/ghcup/Main.hs

@@ -493,6 +493,10 @@ main = do
     >>= \opt@Options {..} -> do
           let settings = toSettings opt
 
+          -- create ~/.ghcup dir
+          ghcdir <- ghcupBaseDir
+          createDirIfMissing newDirPerms ghcdir
+
           -- logger interpreter
           logfile <- initGHCupFileLogging [rel|ghcup.log|]
           let runLogger = myLoggerT LoggerConfig
@@ -588,10 +592,6 @@ main = do
                       , DownloadFailed
                       ]
 
-          -- create ~/.ghcup dir
-          ghcdir <- ghcupBaseDir
-          createDirIfMissing newDirPerms ghcdir
-
           dls <-
             ( runLogger
               . flip runReaderT settings

lib/GHCup/Download.hs

@@ -135,13 +135,10 @@ getDownloads urlSource = do
                L.ByteString
   smartDl uri' = do
     let path = view pathL' uri'
-    json_file <- (liftIO $ ghcupCacheDir)
+    cacheDir <- liftIO $ ghcupCacheDir
-      >>= \cacheDir -> (cacheDir </>) <$> urlBaseName path
+    json_file <- (cacheDir </>) <$> urlBaseName path
     e <-
-      liftIO
+      liftIO $ doesFileExist json_file
-      $ HIO.handleIOError
-          (\e -> if isDoesNotExistError e then pure False else throwIO e)
-      $ doesFileExist json_file
     if e
       then do
         accessTime <-
@@ -168,6 +165,7 @@ getDownloads urlSource = do
           else -- access in less than 5 minutes, re-use file
                liftIO $ readFile json_file
       else do
+        liftIO $ createDirIfMissing newDirPerms cacheDir
         getModTime >>= \case
           Just modTime -> do
             bs <- liftE $ downloadBS uri'