installer: add packages needed to build python-networkmanager

pass the req file to pip (secuential install was needed for Vext)
fixes #812

some systems don't have wheels and need compilation, the packages are needed for those cases

scripts/KlipperScreen-install.sh

@@ -9,7 +9,7 @@ FBTURBO="xserver-xorg-video-fbturbo"
 FBDEV="xserver-xorg-video-fbdev"
 PYTHON="python3-virtualenv virtualenv python3-distutils"
 PYGOBJECT="libgirepository1.0-dev gcc libcairo2-dev pkg-config python3-dev gir1.2-gtk-3.0"
-MISC="librsvg2-common libopenjp2-7 libatlas-base-dev wireless-tools"
+MISC="librsvg2-common libopenjp2-7 libatlas-base-dev wireless-tools libdbus-glib-1-dev autoconf"
 OPTIONAL="xserver-xorg-legacy fonts-nanum"
 
 # moonraker will check this list when updating
@@ -114,15 +114,13 @@ create_virtualenv()
     fi
 
     source ${KSENV}/bin/activate
-    while read requirements; do
-        pip --disable-pip-version-check install $requirements
+    pip --disable-pip-version-check install -r ${KSPATH}/scripts/KlipperScreen-requirements.txt
     if [ $? -gt 0 ]; then
         echo "Error: pip install exited with status code $?"
         echo "Unable to install dependencies, aborting install."
         deactivate
         exit 1
     fi
-    done < ${KSPATH}/scripts/KlipperScreen-requirements.txt
     deactivate
     echo_ok "Virtual enviroment created"
 }