Revert whitespace change

Author: hamishmack

lib/Stack2nix.hs

@@ -196,17 +196,17 @@ packages2nix args pkgs =
             let path = dir </> subdir
             cabalFiles <- liftIO $ findCabalFiles (argHpackUse args) path
             forM cabalFiles $ \cabalFile -> do
-              let pkg = cabalFilePkgName cabalFile
-                  nix = pkg <.> "nix"
-                  nixFile = argOutputDir args </> nix
-                  subdir' = if subdir == "." then Nothing
-                            else Just subdir
-                  src = Just $ C2N.Git url rev (Just sha256) subdir'
-              liftIO $ createDirectoryIfMissing True (takeDirectory nixFile)
-              liftIO $ writeDoc nixFile =<<
-                prettyNix <$> cabal2nix True (argDetailLevel args) src cabalFile
-              liftIO $ appendCache (argCacheFile args) url rev subdir sha256 pkg nix
-              return (fromString pkg, fromString pkg $= mkPath False nix)
+            let pkg = cabalFilePkgName cabalFile
+                nix = pkg <.> "nix"
+                nixFile = argOutputDir args </> nix
+                subdir' = if subdir == "." then Nothing
+                          else Just subdir
+                src = Just $ C2N.Git url rev (Just sha256) subdir'
+            liftIO $ createDirectoryIfMissing True (takeDirectory nixFile)
+            liftIO $ writeDoc nixFile =<<
+              prettyNix <$> cabal2nix True (argDetailLevel args) src cabalFile
+            liftIO $ appendCache (argCacheFile args) url rev subdir sha256 pkg nix
+            return (fromString pkg, fromString pkg $= mkPath False nix)
 
 defaultNixContents :: String
 defaultNixContents = unlines