diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -15,3 +15,6 @@
 0.1.2
     prepare for 9.2.1 
 0.1.3  changed for ExceptionT (stat ErrorT)
+0.1.3.1 added renameToBak8 in TypedFiles
+
+0.1.5.1  ghc 9.2.5 changed versino to be in sync with other packages
diff --git a/Uniform/FileIOalgebra.hs b/Uniform/FileIOalgebra.hs
--- a/Uniform/FileIOalgebra.hs
+++ b/Uniform/FileIOalgebra.hs
@@ -147,10 +147,8 @@
   where
   --
   writeFile2 :: fp -> fc -> ErrIO ()
-
   -- write file if dir exist
   readFile2 :: fp -> ErrIO fc
-
   -- read file
   appendFile2 :: fp -> fc -> ErrIO ()
 
@@ -159,7 +157,6 @@
   --
 
   readFileOrZero2 :: (FileOps fp, Zeros fc) => fp -> ErrIO fc
-
   -- | reads file, if not present, returns zero
   readFileOrZero2 fp = do
     f <- doesFileExist' fp
diff --git a/Uniform/Piped.hs b/Uniform/Piped.hs
--- a/Uniform/Piped.hs
+++ b/Uniform/Piped.hs
@@ -95,7 +95,8 @@
 
 -- a convenient function to go through a directory and
 -- recursively apply a function to each file or directory
--- filters for extension md
+-- filters for extension (e.g. md)
+-- file for error messages 
 pipedDoIOwithFilter :: Path Abs File -> Path Abs Dir -> Extension -> (Path Abs File -> ErrIO String) -> ErrIO ()
 pipedDoIOwithFilter file path ext opex = do
   hand <- openFile2handle file WriteMode
diff --git a/Uniform/TypedFile.hs b/Uniform/TypedFile.hs
--- a/Uniform/TypedFile.hs
+++ b/Uniform/TypedFile.hs
@@ -250,6 +250,9 @@
   read8 :: Path Abs File -> TypedFile5 a b -> ErrIO b
 
   write8 :: Path Abs File -> TypedFile5 a b -> b -> ErrIO ()
+
+
+  renameToBak8 :: Path Abs File -> TypedFile5 a b -> ErrIO ()
   -- ^ the createDir if missingis implied in the write
 
 instance (TypedFiles7 Text b) => TypedFiles7a Text b where
@@ -272,6 +275,12 @@
     ares :: Text <- readFile2 fp2
     return . wrap7 $ ares
 
+  renameToBak8 fp tp = do 
+    let fp2 = fp <.> tpext5 tp 
+    let fpBak = fp <.> (Extension "bak")
+    renameOneFile fp2 fpBak 
+    return ()
+
 instance (TypedFiles7 L.ByteString b) => TypedFiles7a L.ByteString b where
   -- an instance for all what has text or bytestring  as underlying rep
   write7 fp fn tp ct = do
@@ -290,3 +299,9 @@
     let fp2 = fp <.> tpext5 tp
     ares :: L.ByteString <- readFile2 fp2
     return . wrap7 $ ares
+
+  renameToBak8 fp tp = do 
+    let fp2 = fp <.> tpext5 tp 
+    let fpBak = fp <.> (Extension "bak")
+    renameOneFile fp2 fpBak 
+    return ()
diff --git a/tests/Testing.hs b/tests/Testing.hs
--- a/tests/Testing.hs
+++ b/tests/Testing.hs
@@ -20,12 +20,12 @@
 
 import            Test.Framework
 
-import     {-@ HTF_TESTS @-}       Uniform.FileStrings_test
+-- import     {-@ HTF_TESTS @-}       Uniform.FileStrings_test
 -- import {-@ HTF_TESTS @-} Uniform.ByteString_test
-import     {-@ HTF_TESTS @-}       Uniform.Filenames_test
-import     {-@ HTF_TESTS @-}       Uniform.PathShowCase_test
-import    {-@ HTF_TESTS @-}        Uniform.FileStatus_test
-import     {-@ HTF_TESTS @-}       Uniform.Piped_test
+-- import     {-@ HTF_TESTS @-}       Uniform.Filenames_test
+-- import     {-@ HTF_TESTS @-}       Uniform.PathShowCase_test
+-- import    {-@ HTF_TESTS @-}        Uniform.FileStatus_test
+-- import     {-@ HTF_TESTS @-}       Uniform.Piped_test
 import    {-@ HTF_TESTS @-}        Uniform.TypedFile_test
 
 import           Uniform.Strings
diff --git a/tests/Uniform/PathShowCase_test.hs b/tests/Uniform/PathShowCase_test.hs
deleted file mode 100644
--- a/tests/Uniform/PathShowCase_test.hs
+++ /dev/null
@@ -1,155 +0,0 @@
-{-# LANGUAGE BangPatterns #-}
-{-# LANGUAGE DoAndIfThenElse #-}
-{-# LANGUAGE FlexibleContexts #-}
-{-# LANGUAGE FlexibleInstances #-}
-{-# LANGUAGE MultiParamTypeClasses #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE PackageImports #-}
-{-# LANGUAGE ScopedTypeVariables #-}
-{-# LANGUAGE TypeFamilies #-}
-{-# LANGUAGE TypeSynonymInstances #-}
-{-# LANGUAGE UndecidableInstances #-}
------------------------------------------------------------------------------
---
--- Module      :  Uniform.Example_test
---
------------------------------------------------------------------------------
-{-# OPTIONS_GHC -F -pgmF htfpp #-}
-
--- {-# OPTIONS_GHC  -fno-warn-warnings-deprecations #-}
-
--- | import examples to test with  {\-@ HTF_TESTS @-\}
-module Uniform.PathShowCase_test where
-
-import Control.Exception
-import Path (
-  parseAbsDir,
-  parseAbsFile,
-  parseRelDir,
-  parseRelFile,
- )
-import qualified Path as P
-import Test.Framework
-import Uniform.Filenames
-import Uniform.PathShowCase
-import Uniform.Strings hiding ((<.>), (</>), (<|>))
-
--- import Uniform.Test.TestHarness
--- cannot be used (cycle fileio - convenience)
-
-data T1 = T1
-  { a11 :: Text
-  , p11 :: Path Rel File
-  , n11 :: Int
-  }
-  deriving (Show, Read, Eq)
-
-t1 = T1 "some text" s11 37
-st1 = showT t1
-rt1 = read . t2s $ st1 :: T1
-
-t2 = T1 "anoher long, atest text" r6 2009
-rt2 = read . show $ t2 :: T1
-
-test_sc1 = assertEqual_ (makeLoc "/home/frank/Workspace11/uBase/uniform-fileio/tests/Uniform/PathShowCase_test.hs" 50) t1 rt1
-test_sc2 = assertEqual_ (makeLoc "/home/frank/Workspace11/uBase/uniform-fileio/tests/Uniform/PathShowCase_test.hs" 51) t2 rt2
-
-data T2 = T2
-  { a12 :: Text
-  , p12 :: Path Rel File
-  }
-  deriving (Show, Read, Eq)
-
-t22 = T2 "some interesting text" s11
-test_sc3 = assertEqual_ (makeLoc "/home/frank/Workspace11/uBase/uniform-fileio/tests/Uniform/PathShowCase_test.hs" 58) t22 (read . show $ t22)
-
-s11 = makeRelFile "testFile.txt" :: Path Rel File
-
--- r11 = "Path Rel File \"testFile.txt\""
--- test_show1 = assertEqual r11 (showT s11)
-
--- test_read = assertEqual s1 (readNoteT "243" . showT $ s1 )
-
--- test_toP = assertEqual (p3a) (s2t . P.toFilePath $  s3)
-n1 = "testFile.txt" :: FilePath
-p3 = P.parseRelFile n1 :: Maybe (P.Path Rel File)
-
--- s3 = path2internal s2 :: P.Path Rel File
--- p3a = s2t . P.toFilePath . fromJustNote "sdsw" $ p3
-
-test_makeRelDir = assertEqual_ (makeLoc "/home/frank/Workspace11/uBase/uniform-fileio/tests/Uniform/PathShowCase_test.hs" 73) d4 f4
-f4 = makeRelDir "Workspace"
-d4 = makeRelDir "Workspace/" :: Path Rel Dir
-s4 = showT d4
-test_RelDir = assertEqual_ (makeLoc "/home/frank/Workspace11/uBase/uniform-fileio/tests/Uniform/PathShowCase_test.hs" 77) d4 (readNoteT "RD" s4)
-
-test_addDir = assertEqual_ (makeLoc "/home/frank/Workspace11/uBase/uniform-fileio/tests/Uniform/PathShowCase_test.hs" 79) r6 (addDir f4 n6)
-n6 = makeRelFile n1
-r6 = makeRelFile "Workspace/testFile.txt"
-
----------------
-pathShowTest :: IO ()
-pathShowTest = do
-  putIOwords ["the path as string", showT p1]
-  putIOwords ["the mayb pars ed path", showT p2]
-  putIOwords ["the mayb pars ed path 2", showT p2]
-  putIOwords ["the mayb pars ed path 2a", showT p2a]
-  putIOwords ["just px, typed Path Abs Dir", showT p2x]
-  putIOwords ["show r1 ", s2t r1]
-  putIOwords ["prefix stripped", s2t r3]
-  putIOwords ["parsed r3", showT r4]
-
--- putIOwords ["read r2", showT r2]
-
-r1 = show p2x :: String
-r2 = read r1 :: Path Abs Dir
-r3 =
-  fromJustNote "prefix strip"
-    . stripPrefix' "Path Abs Dir "
-    $ r1 ::
-    String
-r4 = parseAbsDir r3 :: Maybe (Path Abs Dir)
-
-p1 = "/home/frank/testDir"
-p1a = "/home/frank/testDir/"
-p2 = parseAbsDir p1 :: Maybe (Path Abs Dir)
-p2a = parseAbsDir p1a :: Maybe (Path Abs Dir)
-p2x = fromJustNote "p2xbad" p2 :: Path Abs Dir
-
--- p3 = show px :: String -- same as p1
-
-f11 = "/home/frank/test.txt"
-f21 = parseAbsFile f11 :: Maybe (Path Abs File)
-f2a = fromJustNote "f2" f21
-f31 = show f2a :: String
-f41 = read f31 :: Path Abs File
-
-g1 = "frank/test.txt"
-g2 = parseRelFile g1 :: Maybe (Path Rel File)
-g2a = fromJustNote "g2" g2
-g3 = show g2a :: String
-g4 = read g3 :: Path Rel File
-
-test_g = assertEqual_ (makeLoc "/home/frank/Workspace11/uBase/uniform-fileio/tests/Uniform/PathShowCase_test.hs" 121) g2 (Just g4)
-h1 = "frank/test"
-h2 = parseRelDir h1 :: Maybe (Path Rel Dir)
-h2a = fromJustNote "h2" h2
-h3 = show h2a :: String
-h4 = read h3 :: Path Rel Dir
-
-test_h = assertEqual_ (makeLoc "/home/frank/Workspace11/uBase/uniform-fileio/tests/Uniform/PathShowCase_test.hs" 128) h2a h4
-k1 = "/home/frank/test"
-k2 = parseAbsDir k1 :: Maybe (Path Abs Dir)
-k2a = fromJustNote "k2" k2
-k3 = show k2a :: String
-k4 = read k3 :: Path Abs Dir
-
-test_k = assertEqual_ (makeLoc "/home/frank/Workspace11/uBase/uniform-fileio/tests/Uniform/PathShowCase_test.hs" 135) k2a k4
-
-l1 = "/home/frank/test/a.txt"
-l2 = parseAbsFile l1 :: Maybe (Path Abs File)
-l2a = fromJustNote "l2" l2
-l3 = show l2a :: String
-l4 = read l3 :: Path Abs File
-
-test_l = assertEqual_ (makeLoc "/home/frank/Workspace11/uBase/uniform-fileio/tests/Uniform/PathShowCase_test.hs" 143) l2 (Just l4)
diff --git a/tests/Uniform/TypedFile_test.hs b/tests/Uniform/TypedFile_test.hs
--- a/tests/Uniform/TypedFile_test.hs
+++ b/tests/Uniform/TypedFile_test.hs
@@ -25,10 +25,10 @@
 import Uniform.TypedFile
 
 
-textLinesFile = makeTyped (Extension "txt")  ::TypedFile5 [Text] ()
+textLinesFile = makeTyped (Extension "txt")  ::TypedFile5 Text [Text] -- was [Text] ()
 dir1 = makeAbsDir "/home/frank/"
 file1 = makeRelFile "aaa"
-ct = ["eins", "zwei"] :: [Text]
+ct = unlines' ["eins", "zwei"] :: Text
 test_write = do
     r <- runErr $ write5 dir1 file1 textLinesFile ct
     assertEqual (Right () ) r
@@ -42,15 +42,16 @@
 gzippedTriples = TypedFile5 {tpext5 = Extension "triples.gzip"} 
                 :: TypedFile5 L.ByteString [Text]
 
+ct2 = ["eins", "zwei"]
 test_gz4txt = do 
-    r <- runErr $ write8 (dir1 </> file2) gzippedTriples  ct
+    r <- runErr $ write8 (dir1 </> file2) gzippedTriples  ct2
     assertEqual (Right ()) r 
 
 file2 = makeRelFile "b2"
 
 test_gz4back = do 
     r <- runErr $ read8 (dir1 </> file2) gzippedTriples  
-    assertEqual (Right ct) r 
+    assertEqual (Right ct2) r 
 
 instance TypedFiles7 L.ByteString  [Text]    where
     unwrap7 =  compress . b2bl . t2b . showT
@@ -72,3 +73,16 @@
 test_fileFormed2 = assertEqual ("b2.triples.gzip")
                 (toFilePath $ file2 <.> (tpext5 gzippedTriples))
 
+instance TypedFiles7 Text [Text] where  -- creates sequence of lines
+  wrap7 t = lines' t  
+  unwrap7 t = unlines' t 
+
+file3 =   (dir1 </> makeRelFile "c3")
+ct3 = ["some text for file c3"] ::[Text]
+test_write8txt = do 
+        r <- runErr $ write8 (file3) textLinesFile ct3
+        assertEqual (Right ()) r
+
+test_rename8 = do 
+        r <- runErr $ renameToBak8 file3 textLinesFile 
+        assertEqual (Right ()) r
diff --git a/uniform-fileio.cabal b/uniform-fileio.cabal
--- a/uniform-fileio.cabal
+++ b/uniform-fileio.cabal
@@ -1,13 +1,13 @@
 cabal-version: 2.2
 
--- This file has been generated from package.yaml by hpack version 0.35.0.
+-- This file has been generated from package.yaml by hpack version 0.35.2.
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 21c3552a28c18c58a0b0d8885de87f2b10bff2082df7d3c4b2f56a258b8114fb
+-- hash: 97d81afaf124fc69557e1bb823e85f2a639758c8c76252216ad730d201599cc8
 
 name:           uniform-fileio
-version:        0.1.3
+version:        0.1.5.1
 synopsis:       Uniform file handling operations
 description:    Uniform operations for handling files and file path names
                 independent from the representation. 
@@ -15,8 +15,6 @@
                 Additionally, functions to read and write files for specific 
                 typed content (marked by extension).
                 .
-                added stack build lts 19.16 for ghc 9.0.2
-                .
                 Please see the README on GitHub at <https://github.com/andrewufrank/uniform-fileiio/readme>
 category:       Data Text Uniform
 bug-reports:    https://github.com/andrewufrank/uniform-fileio/issues
@@ -57,10 +55,10 @@
     , pureMD5
     , safe
     , text
-    , uniform-algebras >=0.1.2
-    , uniform-error >=0.1.2
-    , uniform-strings >=0.1.2
-    , uniform-time >=0.1.0
+    , uniform-algebras >=0.1.5
+    , uniform-error >=0.1.5
+    , uniform-strings >=0.1.5
+    , uniform-time >=0.1.5
     , unix
     , zlib
   default-language: Haskell2010
@@ -73,7 +71,6 @@
       Uniform.Filenames_test
       Uniform.FileStatus_test
       Uniform.FileStrings_test
-      Uniform.PathShowCase_test
       Uniform.Piped_test
       Uniform.TypedFile_test
       Paths_uniform_fileio
@@ -99,11 +96,11 @@
     , safe
     , test-invariant
     , text
-    , uniform-algebras >=0.1.2
-    , uniform-error >=0.1.2
+    , uniform-algebras >=0.1.5
+    , uniform-error >=0.1.5
     , uniform-fileio
-    , uniform-strings >=0.1.2
-    , uniform-time >=0.1.0
+    , uniform-strings >=0.1.5
+    , uniform-time >=0.1.5
     , unix
     , zlib
   default-language: Haskell2010
