diff --git a/install.sh b/install.sh
index 175b206..8dd7623 100755
--- a/install.sh
+++ b/install.sh
@@ -106,12 +106,13 @@ set -ex
 function install_apt {
     if [ -n "${APT_GET}" ]; then
         if [ -z "${SKIP_UPDATE}" ]; then
-            sudo apt-get update
+            ${SUDO} apt-get update
         fi
-        if echo $PYVER|grep "3\."; then
-            sudo apt-get -y install libreadline6-dev python3-dev python3-setuptools python3-yaml python3-pip
+        _PYVER=$1
+        if echo $_PYVER|grep "3\."; then
+            ${SUDO} apt-get -y install libreadline6-dev python3-dev python3-setuptools python3-yaml python3-pip
         else
-            sudo apt-get -y install libreadline6-dev python-dev python-setuptools python-yaml python-pip
+            ${SUDO} apt-get -y install libreadline6-dev python-dev python-setuptools python-yaml python-pip
         fi
     fi
 }
@@ -132,17 +133,18 @@ function install_yum {
             PARAMS="$PARAMS --refresh"
         fi
 
-        if echo $PYVER|grep "3\."; then
-            sudo $CMD $PARAMS install readline-devel python3-devel python3-setuptools python3-yaml python3-pip
+        _PYVER=$1
+        if echo $_PYVER|grep "3\."; then
+            ${SUDO} $CMD $PARAMS install readline-devel python3-devel python3-setuptools python3-yaml python3-pip
         else
-            sudo $CMD $PARAMS install readline-devel python-devel python-setuptools python-yaml python-pip
+            ${SUDO} $CMD $PARAMS install readline-devel python-devel python-setuptools python-yaml python-pip
         fi
     fi
 }
 
 function install_packages {
-    install_apt
-    install_yum
+    install_apt $1
+    install_yum $1
 }
 
 function curl_get_pip {
@@ -204,7 +206,7 @@ if [ "${BACKEND_GDB}" -eq 1 ]; then
     GDB_PYTHON=$(${GDB} -batch -q --nx -ex 'pi import sys; print(sys.executable)')
     GDB_PYTHON="${GDB_PYTHON/%$GDB_PYVER/}${GDB_PYVER}"
 
-    install_packages
+    install_packages $GDB_PYVER
 
     if [ -z $USER_MODE ]; then
         GDB_SITE_PACKAGES=$(${GDB} -batch -q --nx -ex 'pi import site; print(site.getsitepackages()[0])')
@@ -247,7 +249,7 @@ if [ "${BACKEND_LLDB}" -eq 1 ]; then
         LLDB_SITE_PACKAGES=$(${LLDB} -Q -x -b --one-line 'script import site; print(site.getusersitepackages())'|tail -1) || quit "Failed to locate site-packages." 1
     fi
 
-    install_packages || quit "Failed to install packages." 1
+    install_packages $LLDB_PYVER || quit "Failed to install packages." 1
 
     if [ "$LLDB_SITE_PACKAGES" == "$GDB_SITE_PACKAGES" ]; then
         echo "Skipping installation for LLDB - same site-packages directory"
@@ -284,7 +286,7 @@ if [ "${BACKEND_GDB}" -ne 1 ] && [ "${BACKEND_LLDB}" -ne 1 ]; then
         PYTHON_SITE_PACKAGES=$(${PYTHON} -c 'import site; print(site.getusersitepackages())')
     fi
 
-    install_packages
+    install_packages $PYVER
 
     # Install Voltron and dependencies
     ${SUDO} ${PYTHON} -m pip install -U $USER_MODE $DEV_MODE .