diff --git a/ats-setup.cabal b/ats-setup.cabal
--- a/ats-setup.cabal
+++ b/ats-setup.cabal
@@ -1,5 +1,5 @@
 name:                ats-setup
-version:             0.2.0.0
+version:             0.2.0.1
 synopsis:            ATS scripts for Cabal builds
 description:         This package contains various scripts that go in a package's @Setup.hs@ to make building libraries with ATS dependencies easier.
 license:             BSD3
diff --git a/src/Distribution/ATS.hs b/src/Distribution/ATS.hs
--- a/src/Distribution/ATS.hs
+++ b/src/Distribution/ATS.hs
@@ -11,14 +11,13 @@
                         , intinf
                         , atsPrelude
                         , atsContrib
-                        , atsFull
-                        , findCli
                         ) where
 
 import qualified Codec.Archive.Tar                    as Tar
 import           Codec.Compression.GZip               (decompress)
 import           Control.Concurrent.ParallelIO.Global
 import           Control.Monad
+import           Data.Bool
 import           Data.List                            (intercalate)
 import           Distribution.PackageDescription
 import           Distribution.Simple
@@ -54,7 +53,9 @@
 
 -- TODO custom directory?
 cleanATSCabal :: IO ()
-cleanATSCabal = removeDirectoryRecursive "ats-deps"
+cleanATSCabal = do
+    b <- doesDirectoryExist "ats-deps"
+    bool (pure ()) (removeDirectoryRecursive "ats-deps") b
 
 vString :: ATSVersion -> String
 vString = intercalate "." . fmap show
@@ -63,10 +64,6 @@
 atsContrib v = ATSDependency ("ats2-postiats-" ++ vs ++ "-contrib") "ats-deps/contrib" ("https://downloads.sourceforge.net/project/ats2-lang/ats2-lang/ats2-postiats-" ++ vs ++ "/ATS2-Postiats-contrib-" ++ vs ++ ".tgz")
     where vs = vString v
 
--- | Directory traversal library for ATS
-findCli :: ATSDependency
-findCli = ATSDependency"atscntrb-hx-find-cli-1.0.0" "ats-deps/contrib/atscntrb-hx-find-cli" "https://registry.npmjs.org/atscntrb-hx-find-cli/-/atscntrb-hx-find-cli-1.0.0.tgz"
-
 -- | GMP bindings for ATS
 libgmp :: ATSDependency
 libgmp = ATSDependency "atscntrb-libgmp-1.0.4" "ats-deps/contrib/atscntrb-libgmp" "https://registry.npmjs.org/atscntrb-libgmp/-/atscntrb-libgmp-1.0.4.tgz"
@@ -75,11 +72,6 @@
 intinf :: ATSDependency
 intinf = ATSDependency "atscntrb-hs-intinf-1.0.6" "ats-deps/contrib/atscntrb-hx-intinf" "https://registry.npmjs.org/atscntrb-hx-intinf/-/atscntrb-hx-intinf-1.0.6.tgz"
 
--- | Full ATS libraries.
-atsFull :: ATSVersion -> ATSDependency
-atsFull v = ATSDependency ("ats2-postiats-" ++ vs) "ats-deps" ("https://github.com/vmchale/atspkg/raw/master/pkgs/ATS2-Postiats-" ++ vs ++ ".tar.gz")
-    where vs = vString v
-
 -- | ATS prelude
 atsPrelude :: ATSVersion -> ATSDependency
 atsPrelude v = ATSDependency ("ats2-postiats-" ++ vs ++ "-prelude") "ats-deps/prelude" ("https://downloads.sourceforge.net/project/ats2-lang/ats2-lang/ats2-postiats-" ++ vs ++ "/ATS2-Postiats-include-" ++ vs ++ ".tgz")
@@ -91,7 +83,7 @@
 fetchDependency :: ATSDependency -> IO ()
 fetchDependency (ATSDependency libNameATS dirName url) = do
 
-    needsSetup <- not <$> doesDirectoryExist (dirName ++ "/unpacked")
+    needsSetup <- not <$> doesFileExist (dirName ++ "/unpacked")
 
     when needsSetup $ do