Added required dependencies for openSUSE tumbleweed

OpenSUSE Tumbleweed has an error where install completes but the xkeysnail service won't run due to "display not found". Double quotes together indicates display environment variable inside the command is nonexistent or empty. 

This patch inlines `export DISPLAY=` [ insert actual DISPLAY variable value] at the beginning of the main command in the xkeysnail service file, just before the file is copied into its destination. 

Don't know of any other way to fix the issue on Tumbleweed. Tried moving the "Environment" line before the "ExecStart" line in the service file, that of course made no difference.

linux/system-config/unipkg.sh

@@ -1,15 +1,31 @@
 #!/bin/bash
 
 if pkgmgr="$( which apt-get )" 2> /dev/null; then
-   echo "Debian"
+   echo 
+   echo "Debian apt-get package manager detected... "
+   echo "Installing $1... "
+   echo 
    $pkgmgr update
-   $pkgmgr --yes --force-yes install $1
+   $pkgmgr --yes install $1
 elif pkgmgr="$( which dnf )" 2> /dev/null; then
-   echo "dnf"
+   echo 
+   echo "dnf package manager detected... "
+   echo "Installing $1... "
+   echo 
    $pkgmgr check-update; $pkgmgr install -y $1
 elif pkgmgr="$( which pacman )" 2> /dev/null; then
-   echo "Arch-based"
+   echo 
+   echo "Arch-based pacman package manager detected... "
+   echo "Installing $1... "
+   echo 
    $pkgmgr -Syy;yes | $pkgmgr -S $1
+elif pkgmgr="$( which zypper )" 2> /dev/null; then
+   echo 
+   echo "zypper package manager detected... "
+   echo "Installing $1... "
+   echo 
+   $pkgmgr refresh
+   $pkgmgr -n install $1
 else
    echo "Package manager not found, please install $1" >&2
    exit 1
@@ -18,4 +34,4 @@ if [[ 1 -ne $# ]]; then
    echo "Syntax: $0 PACKAGE"
    exit 1
 fi
-exit $?
+exit $?

xkeysnail_service.sh

@@ -250,6 +250,8 @@ fi
 if [[ $dename == "kde" ]]; then
 	if [[ $distro == "manjarolinux" ]]; then
 		sudo ./linux/system-config/unipkg.sh vte3
+	elif [[ ${distro:0:8} == "opensuse" ]];then
+		sudo ./linux/system-config/unipkg.sh vte-devel-0.62.3
 	else
 		sudo ./linux/system-config/unipkg.sh libvte-2.91-dev
 	fi
@@ -335,8 +337,10 @@ if ! [ -x "$(command -v python3-config)" ]; then
 		pydev="python3-dev"
 	elif [ "$distro" == "fedora" ]; then
 		pydev="python3-devel"
+	elif [ "${distro:0:8}" == "opensuse" ]; then
+		pydev="python3-devel python3-gobject python3-gobject-Gdk typelib-1_0-Gtk-3_0 libgtk-3-0"
 	fi
-	if [ "$distro" == "gnome" ] || [ "$distro" == "fedora" ] || [ "$distro" == "debian" ] || [ "$distro" == 'linuxmint' ]; then
+	if [ "$distro" == "gnome" ] || [ "$distro" == "fedora" ] || [ "$distro" == "debian" ] || [ "$distro" == 'linuxmint' ] || [ "${distro:0:8}" == "opensuse" ]; then
 		echo "Will need to install $pydev..."
 		sudo ./linux/system-config/unipkg.sh "$pydev"
 	fi
@@ -345,8 +349,10 @@ fi
 # 	sudo ./linux/system-config/unipkg.sh gnome-tweaks gnome-shell-extension-appindicator gir1.2-appindicator3-0.1
 # fi
 if ! [ -x "$(command -v xhost)" ] || ! [ -x "$(command -v gcc)" ]; then
-	if [ "$distro" == "\"manjaro linux\"" ]; then
+	if [ "$distro" == "manjarolinux" ]; then
 		sudo ./linux/system-config/unipkg.sh "xorg-xhost gcc"
+	elif [ "${distro:0:8}" == "opensuse" ]; then
+		sudo ./linux/system-config/unipkg.sh "gcc"
 	fi
 fi
 if [ "$distro" == 'linuxmint' ]; then
@@ -491,6 +497,12 @@ if ! [[ $1 == "5" || $1 == "uninstall" || $1 == "Uninstall" ]]; then
 	fi
 	sed -i "s#{xkeysnail}#`which xkeysnail`#g" ./linux/xkeysnail.service.new
 	sed -i "s#{xkeysnail}#`which xkeysnail`#g" ./linux/limitedadmins.new
+	
+	# openSUSE needs DISPLAY exported inside main command to avoid display "" not found error. 
+	if [[ ${distro:0:8} == "opensuse" ]];then
+		sed -i "s#'/usr/bin/xhost#'export DISPLAY=`echo $DISPLAY` \&\& /usr/bin/xhost#g" ./linux/xkeysnail.service.new
+	fi
+	
 	sudo mv ./linux/xkeysnail.service.new "$xkeypath"xkeysnail.service && echo "Service file added to "$xkeypath"xkeysnail.service"
 	sudo chown root:root ./linux/limitedadmins.new
 	# Add a check here for xkeysnail path resolving