diff --git a/dsh-sql.cabal b/dsh-sql.cabal
--- a/dsh-sql.cabal
+++ b/dsh-sql.cabal
@@ -1,5 +1,5 @@
 Name:                dsh-sql
-Version:             0.2.0.0
+Version:             0.2.0.1
 Synopsis:            SQL backend for Database Supported Haskell (DSH)
 Description:
   This package provides an SQL backend for Database Supported Haskell
@@ -52,7 +52,7 @@
   if flag(debuggraph)
     CPP-Options:     -DDEBUGGRAPH
 
-  GHC-Options:       -Wall -fno-warn-orphans -fprof-auto -O2
+  GHC-Options:       -Wall -fno-warn-orphans -fprof-auto
 
   Exposed-modules:   Database.DSH.Backend.Sql
 
@@ -75,8 +75,7 @@
                      Database.DSH.Backend.Sql.VectorAlgebra
                      Database.DSH.Backend.Sql.Vector
 
-Test-Suite sqltests
-    type:       exitcode-stdio-1.0
+Executable sqltests
     Hs-Source-Dirs : testsuite
     Main-is:       Main.hs
     Build-depends:
diff --git a/src/Database/DSH/Backend/Sql.hs b/src/Database/DSH/Backend/Sql.hs
--- a/src/Database/DSH/Backend/Sql.hs
+++ b/src/Database/DSH/Backend/Sql.hs
@@ -332,7 +332,7 @@
     h <- fileId
     fileName <- dumpPlan ("q_ta_" ++ h) False bp
     void $ runCommand $ printf ".cabal-sandbox/bin/tadot -i %s.plan | dot -Tpdf -o %s.pdf" fileName fileName
-    void $ runCommand $ printf "evince %s.pdf" fileName
+    void $ runCommand $ printf "evince %s.pdf 2> /dev/null" fileName
 
 -- | Show the optimized relational table algebra plan
 showRelationalOptQ :: forall a.DSH.QA a => DSH.Q a -> IO ()
@@ -342,7 +342,7 @@
     h <- fileId
     fileName <- dumpPlan ("q_ta_" ++ h) True bp
     void $ runCommand $ printf ".cabal-sandbox/bin/tadot -i %s.plan | dot -Tpdf -o %s.pdf" fileName fileName
-    void $ runCommand $ printf "evince %s.pdf" fileName
+    void $ runCommand $ printf "evince %s.pdf 2> /dev/null" fileName
 
 -- | Show all SQL queries produced for the given query
 showSqlQ :: forall a.DSH.QA a => DSH.Q a -> IO ()