installer improvements (#601)

The installer now catchs apt errors
FBturbo is now optional and FBdev is used as fallback
install xserver-xorg-legacy but do not force it, it's usually required for a lot of screens, but not 100%
hide pip update warnings, the new version broke stuff.
more granularity and steps to what's being installed, should make it easier to debug if something goes wrong

scripts/KlipperScreen-install.sh

@@ -4,10 +4,13 @@ SCRIPTPATH="$( cd "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
 KSPATH=$(sed 's/\/scripts//g' <<< $SCRIPTPATH)
 KSENV="${HOME}/.KlipperScreen-env"
 
-PKGLIST="xserver-xorg-video-fbturbo xdotool xinit xinput x11-xserver-utils libopenjp2-7 python3-distutils"
+XSERVER="xinit xinput x11-xserver-utils xdotool"
-PKGLIST="${PKGLIST} python3-virtualenv virtualenv matchbox-keyboard wireless-tools"
+FBTURBO="xserver-xorg-video-fbturbo"
-PKGLIST="${PKGLIST} libatlas-base-dev fonts-freefont-ttf"
+FBDEV="xserver-xorg-video-fbdev"
-PKGLIST="${PKGLIST} libgirepository1.0-dev gcc libcairo2-dev pkg-config python3-dev gir1.2-gtk-3.0"
+PYTHON="python3-virtualenv virtualenv python3-distutils"
+PYGOBJECT="libgirepository1.0-dev gcc libcairo2-dev pkg-config python3-dev gir1.2-gtk-3.0"
+MISC="libopenjp2-7 libatlas-base-dev fonts-freefont-ttf matchbox-keyboard wireless-tools"
+OPTIONAL="xserver-xorg-legacy"
 
 Red='\033[0;31m'
 Green='\033[0;32m'
@@ -49,7 +52,49 @@ install_packages()
     fi
 
     echo_text "Installing KlipperScreen dependencies"
-    sudo apt-get install -y $PKGLIST
+    sudo apt-get install -y $XSERVER
+    if [ $? -eq 0 ]; then
+        echo_ok "Installed X"
+    else
+        echo_error "Installation of X-server dependencies failed ($XSERVER)"
+        exit 1
+    fi
+    sudo apt-get install -y $OPTIONAL
+    sudo apt-get install -y $FBTURBO
+    if [ $? -eq 0 ]; then
+        echo_ok "Installed FBturbo driver"
+    else
+        echo $_
+        echo_error "Installation of $FBTURBO failed, trying $FBDEV"
+        sudo apt-get install -y $FBDEV
+        if [ $? -eq 0 ]; then
+            echo_ok "Installed FBdev"
+        else
+            echo_error "Installation of FBdev failed ($FBDEV)"
+            exit 1
+        fi
+    fi
+    sudo apt-get install -y $PYTHON
+    if [ $? -eq 0 ]; then
+        echo_ok "Installed Python dependincies"
+    else
+        echo_error "Installation of Python dependincies failed ($PYTHON)"
+        exit 1
+    fi
+    sudo apt-get install -y $PYGOBJECT
+    if [ $? -eq 0 ]; then
+        echo_ok "Installed PyGobject dependincies"
+    else
+        echo_error "Installation of PyGobject dependincies failed ($PYGOBJECT)"
+        exit 1
+    fi
+    sudo apt-get install -y $MISC
+    if [ $? -eq 0 ]; then
+        echo_ok "Installed Misc packages"
+    else
+        echo_error "Installation of Misc packages failed ($MISC)"
+        exit 1
+    fi
 }
 
 create_virtualenv()
@@ -65,12 +110,12 @@ create_virtualenv()
 
     source ${KSENV}/bin/activate
     while read requirements; do
-        pip install $requirements
+        pip --disable-pip-version-check install $requirements
         if [ $? -gt 0 ]; then
             echo "Error: pip install exited with status code $?"
             echo "Unable to install dependencies, aborting install."
             deactivate
-            exit
+            exit 1
         fi
     done < ${KSPATH}/scripts/KlipperScreen-requirements.txt
     deactivate
@@ -125,7 +170,7 @@ start_KlipperScreen()
 }
 if [ "$EUID" == 0 ]
     then echo_error "Plaease do not run this script as root"
-    exit
+    exit 1
 fi
 install_packages
 create_virtualenv