diff --git a/audacity.cabal b/audacity.cabal
--- a/audacity.cabal
+++ b/audacity.cabal
@@ -1,5 +1,5 @@
 Name:                audacity
-Version:             0.0.2
+Version:             0.0.2.1
 Synopsis:            Interchange with the Audacity sound signal editor
 Description:
   This package provides functions
@@ -31,7 +31,7 @@
     Put several audio and label files into tracks of a new Audacity project.
     Opening one or even multiple such projects is much easier
     than loading individual tracks into Audacity.
-Homepage:            http://hub.darcs.net/thielema/audacity
+Homepage:            https://hub.darcs.net/thielema/audacity
 License:             BSD3
 License-File:        LICENSE
 Author:              Henning Thielemann
@@ -41,13 +41,13 @@
 Cabal-Version:       >=1.10
 
 Source-Repository this
-  Tag:         0.0.2
+  Tag:         0.0.2.1
   Type:        darcs
-  Location:    http://hub.darcs.net/thielema/audacity
+  Location:    https://hub.darcs.net/thielema/audacity
 
 Source-Repository head
   Type:        darcs
-  Location:    http://hub.darcs.net/thielema/audacity
+  Location:    https://hub.darcs.net/thielema/audacity
 
 Flag buildExamples
   description: Build example executables
@@ -95,7 +95,7 @@
       soxlib >=0.0 && <0.1,
       storablevector,
       directory,
-      optparse-applicative >=0.11 && <0.15,
+      optparse-applicative >=0.11 && <0.18,
       filepath >=1.3 && <1.5,
       non-empty,
       utility-ht,
@@ -115,7 +115,7 @@
       soxlib >=0.0 && <0.1,
       storablevector,
       directory,
-      optparse-applicative >=0.11 && <0.15,
+      optparse-applicative >=0.11 && <0.18,
       filepath >=1.3 && <1.5,
       non-empty,
       utility-ht,
@@ -135,7 +135,7 @@
       soxlib >=0.0 && <0.1,
       storablevector,
       directory,
-      optparse-applicative >=0.11 && <0.15,
+      optparse-applicative >=0.11 && <0.18,
       filepath >=1.3 && <1.5,
       non-empty,
       utility-ht,
@@ -155,7 +155,7 @@
       soxlib >=0.0 && <0.1,
       storablevector,
       directory,
-      optparse-applicative >=0.11 && <0.15,
+      optparse-applicative >=0.11 && <0.18,
       filepath >=1.3 && <1.5,
       non-empty,
       utility-ht,
diff --git a/example/Common.hs b/example/Common.hs
--- a/example/Common.hs
+++ b/example/Common.hs
@@ -13,8 +13,6 @@
 
 import qualified System.FilePath as FilePath
 import qualified System.Directory as Dir
-import qualified System.Exit as Exit
-import qualified System.IO as IO
 import System.FilePath ((</>))
 
 import qualified Data.NonEmpty as NonEmpty
@@ -69,12 +67,6 @@
    SoxLib.defaultWriterInfo {
       SoxLib.writerSignalInfo = Just $ SoxLib.signalInfo fmtIn
    }
-
-
-exitFailureMsg :: String -> IO a
-exitFailureMsg msg = do
-   IO.hPutStrLn IO.stderr msg
-   Exit.exitFailure
 
 
 some :: OP.Parser a -> OP.Parser (NonEmpty.T [] a)