modified python dependency resolution to use function

extras/Slipstream.install

@@ -67,12 +67,12 @@ check-deps(){
     done
     pybin=$(which python3)
     if [ -z $pybin ] ; then
-        run install-packages python3 python3-pip
+        bins_missing+=(python3)
         # TODO: make a universal package install function
     fi
     pipbin=$(which pip3)
     if [ -z $pipbin ] ; then
-        run install-packages python3-pip
+        bins_missing+=(pip3)
     fi
     for pkg in ${pip_packages[@]} ; do
         pippkg_installed=$(pip list | grep -F $pkg ; echo $?)
@@ -91,7 +91,7 @@ check-deps(){
     local _bins_missing=${#bins_missing[@]}
     # If higher than 0, return a fail (1)
     if [[ $_bins_missing != 0 ]] ; then
-        return 1
+        return ${#_bins_missing}
     else
         return 0
     fi