diff --git a/scripts/lib/common.sh b/scripts/lib/common.sh
index 002d474a..bbf3a25a 100644
--- a/scripts/lib/common.sh
+++ b/scripts/lib/common.sh
@@ -15,6 +15,7 @@ DRY_RUN=false
 POSITION="none"
 SOURCES_TXT="$( dirname $DIR)/sources.txt"
 CABAL=${CABAL:-cabal}
+TRAVIS=${TRAVIS:-false}
 
 declare -a SOURCES
 readarray -t SOURCES < "$SOURCES_TXT"
diff --git a/scripts/test-all.sh b/scripts/test-all.sh
index cf064f7a..a8a66e99 100755
--- a/scripts/test-all.sh
+++ b/scripts/test-all.sh
@@ -25,9 +25,9 @@ prepare_sandbox () {
         (cd "$s" && $CABAL sandbox init --sandbox=../.cabal-sandbox/ && $CABAL sandbox add-source .)
     done
     if $TRAVIS ; then
-        travis_retry $CABAL install --enable-tests ${SOURCES[@]}
+        travis_retry $CABAL install -v --enable-tests ${SOURCES[@]}
     else
-        $CABAL install -vvv --enable-tests ${SOURCES[@]}
+        $CABAL install --enable-tests ${SOURCES[@]}
     fi
 }