diff --git a/PRbL b/PRbL
index d56848b..f61e810 160000
--- a/PRbL
+++ b/PRbL
@@ -1 +1 @@
-Subproject commit d56848bc3f35398117067ae083a9fc6573cf6703
+Subproject commit f61e81082922e314c573ca70a1ed08937a8373c0
diff --git a/extras/Slipstream.install b/extras/Slipstream.install
index 16664f3..207a52a 100755
--- a/extras/Slipstream.install
+++ b/extras/Slipstream.install
@@ -54,11 +54,13 @@ check-deps(){
             bins_missing+=($pkg)
         fi
     done
-    if ! $(which python3) ; then
+    pybin=$(which python3)
+    if [ -z $pybin ] ; then
         run sudo apt-get install -y python3 python3-pip
         # TODO: make a universal package install function
     fi
-    if ! $(which pip3) ; then
+    pipbin=$(which pip3)
+    if [ -z $pipbin ] ; then
         run sudo apt-get install -y python3-pip
     fi
     for pkg in ${pip_packages[@]} ; do
@@ -70,8 +72,8 @@ check-deps(){
 
     # This installer requires golang to work
     # TODO: better handling of prbl_packages as dependencies
-
-    if ! $(which go) ; then
+    gobin=$(which go)
+    if  [ -z $gobin ] ; then
         bins_missing+=("prbl: golang.install")
     fi
     # Count the number of entries in bins_missing