diff --git a/app/ghcup/BrickMain.hs b/app/ghcup/BrickMain.hs
index 93ff739..a320087 100644
--- a/app/ghcup/BrickMain.hs
+++ b/app/ghcup/BrickMain.hs
@@ -460,7 +460,7 @@ install' _ (_, ListResult {..}) = do
           liftE $ installHLSBin lVer Nothing $> vi
         Stack -> do
           let vi = getVersionInfo lVer Stack dls
-          liftE $ installStackBin lVer $> vi
+          liftE $ installStackBin lVer Nothing $> vi
     )
     >>= \case
           VRight vi                         -> do
diff --git a/app/ghcup/Main.hs b/app/ghcup/Main.hs
index 3b2e7aa..34caac0 100644
--- a/app/ghcup/Main.hs
+++ b/app/ghcup/Main.hs
@@ -1707,26 +1707,20 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                           pure $ ExitFailure 4
 
           let installStack InstallOptions{..} =
-                (case isolateDir of
-                  Just isoDir -> runInstTool instPlatform $ do
-                         (v, vi) <- liftE $ fromVersion instVer Stack
-                         let stackVersion = (_tvVersion v)
-                         liftE $ installStackBinIsolated isoDir stackVersion
-                         pure vi
-                  Nothing ->
-                    case instBindist of
-                       Nothing -> runInstTool instPlatform $ do
-                         (v, vi) <- liftE $ fromVersion instVer Stack
-                         liftE $ installStackBin (_tvVersion v)
-                         pure vi
-                       Just uri -> do
-                         s' <- appState
-                         runInstTool' s'{ settings = settings { noVerify = True}} instPlatform $ do
-                           (v, vi) <- liftE $ fromVersion instVer Stack
-                           liftE $ installStackBindist
-                               (DownloadInfo uri Nothing "")
-                               (_tvVersion v)
-                           pure vi
+                 (case instBindist of
+                    Nothing -> runInstTool instPlatform $ do
+                      (v, vi) <- liftE $ fromVersion instVer Stack
+                      liftE $ installStackBin (_tvVersion v) isolateDir
+                      pure vi
+                    Just uri -> do
+                      s' <- appState
+                      runInstTool' s'{ settings = settings { noVerify = True}} instPlatform $ do
+                        (v, vi) <- liftE $ fromVersion instVer Stack
+                        liftE $ installStackBindist
+                            (DownloadInfo uri Nothing "")
+                            (_tvVersion v)
+                            isolateDir
+                        pure vi
                   )
                   >>= \case
                         VRight vi -> do
diff --git a/lib/GHCup.hs b/lib/GHCup.hs
index 576084a..d1e6a9e 100644
--- a/lib/GHCup.hs
+++ b/lib/GHCup.hs
@@ -671,6 +671,7 @@ installStackBin :: ( MonadMask m
                    , MonadFail m
                    )
                 => Version
+                -> Maybe FilePath
                 -> Excepts
                      '[ AlreadyInstalled
                       , CopyError
@@ -686,9 +687,9 @@ installStackBin :: ( MonadMask m
                       ]
                      m
                      ()
-installStackBin ver = do
+installStackBin ver isoFilepath = do
   dlinfo <- liftE $ getDownloadInfo Stack ver
-  installStackBindist dlinfo ver
+  installStackBindist dlinfo ver isoFilepath
 
 
 -- | Like 'installStackBin', except takes the 'DownloadInfo' as