feat: Add Arch virtualization setup script (#813)

* Add Arch virtualization setup script

* Replace hardcoded pacman

* Update core/tabs/system-setup/arch/virtualization.sh

Co-authored-by: Adam Perkowski <adas1per@protonmail.com>

* Update virtualization.sh

Co-authored-by: Adam Perkowski <adas1per@protonmail.com>

* Update core/tabs/system-setup/arch/virtualization.sh

Co-authored-by: Liam <33645555+lj3954@users.noreply.github.com>

* chore: formatting

---------

Co-authored-by: Adam Perkowski <adas1per@protonmail.com>
Co-authored-by: Liam <33645555+lj3954@users.noreply.github.com>

core/tabs/system-setup/arch/virtualization.sh

@@ -0,0 +1,104 @@
+#!/bin/sh -e
+
+. ../../common-script.sh
+
+installQEMUDesktop() {
+    if ! command_exists qemu-img; then
+        printf "%b\n" "${YELLOW}Installing QEMU.${RC}"
+        "$ESCALATION_TOOL" "$PACKAGER" -S --needed --noconfirm qemu-desktop
+    else
+        printf "%b\n" "${GREEN}QEMU is already installed.${RC}"
+    fi
+    checkKVM
+}
+
+installQEMUEmulators() {
+    if ! "$PACKAGER" -Q | grep -q "qemu-emulators-full "; then
+        printf "%b\n" "${YELLOW}Installing QEMU-Emulators.${RC}"
+        "$ESCALATION_TOOL" "$PACKAGER" -S --needed --noconfirm qemu-emulators-full swtpm
+    else
+        printf "%b\n" "${GREEN}QEMU-Emulators already installed.${RC}"
+    fi
+}
+
+installVirtManager() {
+    if ! command_exists virt-manager; then
+        printf "%b\n" "${YELLOW}Installing Virt-Manager.${RC}"
+        "$ESCALATION_TOOL" "$PACKAGER" -S --needed --noconfirm virt-manager
+    else
+        printf "%b\n" "${GREEN}Virt-Manager already installed.${RC}"
+    fi
+}
+
+checkKVM() {
+    if [ ! -e "/dev/kvm" ]; then
+        printf "%b\n" "${RED}KVM is not available. Make sure you have CPU virtualization support enabled in your BIOS/UEFI settings. Please refer https://wiki.archlinux.org/title/KVM for more information.${RC}"
+    else
+        "$ESCALATION_TOOL" usermod "$USER" -aG kvm
+    fi
+}
+
+setupLibvirt() {
+    printf "%b\n" "${YELLOW}Configuring Libvirt.${RC}"
+    if "$PACKAGER" -Q | grep -q "iptables "; then
+        "$ESCALATION_TOOL" "$PACKAGER" -Rdd --noconfirm iptables
+    fi
+
+    "$ESCALATION_TOOL" "$PACKAGER" -S --needed --noconfirm dnsmasq iptables-nft
+    "$ESCALATION_TOOL" sed -i 's/^#\?firewall_backend\s*=\s*".*"/firewall_backend = "iptables"/' "/etc/libvirt/network.conf"
+
+    if systemctl is-active --quiet polkit; then
+        "$ESCALATION_TOOL" sed -i 's/^#\?auth_unix_ro\s*=\s*".*"/auth_unix_ro = "polkit"/' "/etc/libvirt/libvirtd.conf"
+        "$ESCALATION_TOOL" sed -i 's/^#\?auth_unix_rw\s*=\s*".*"/auth_unix_rw = "polkit"/' "/etc/libvirt/libvirtd.conf"
+    fi
+
+    "$ESCALATION_TOOL" usermod "$USER" -aG libvirt
+
+    for value in libvirt libvirt_guest; do
+        if ! grep -wq "$value" /etc/nsswitch.conf; then
+            "$ESCALATION_TOOL" sed -i "/^hosts:/ s/$/ ${value}/" /etc/nsswitch.conf
+        fi
+    done
+
+    "$ESCALATION_TOOL" systemctl enable --now libvirtd.service
+    "$ESCALATION_TOOL" virsh net-autostart default
+
+    checkKVM
+}
+
+installLibvirt() {
+    if ! command_exists libvirtd; then
+        "$ESCALATION_TOOL" "$PACKAGER" -S --needed --noconfirm libvirt dmidecode
+    else
+        printf "%b\n" "${GREEN}Libvirt is already installed.${RC}"
+    fi
+    setupLibvirt
+}
+
+main() {
+    printf "%b\n" "${YELLOW}Choose what to install:${RC}"
+    printf "%b\n" "1. ${YELLOW}QEMU${RC}"
+    printf "%b\n" "2. ${YELLOW}QEMU-Emulators ( Extended architectures )${RC}"
+    printf "%b\n" "3. ${YELLOW}Libvirt${RC}"
+    printf "%b\n" "4. ${YELLOW}Virtual-Manager${RC}"
+    printf "%b\n" "5. ${YELLOW}All${RC}"
+    printf "%b" "Enter your choice [1-5]: "
+    read -r CHOICE
+    case "$CHOICE" in
+        1) installQEMUDesktop ;;
+        2) installQEMUEmulators ;;
+        3) installLibvirt ;;
+        4) installVirtManager ;;
+        5)
+            installQEMUDesktop
+            installQEMUEmulators
+            installLibvirt
+            installVirtManager
+            ;;
+        *) printf "%b\n" "${RED}Invalid choice.${RC}" && exit 1 ;;
+    esac
+}
+
+checkEnv
+checkEscalationTool
+main

core/tabs/system-setup/tab_data.toml

@@ -38,6 +38,12 @@ description = "Paru is your standard pacman wrapping AUR helper with lots of fea
 script = "arch/paru-setup.sh"
 task_list = "I"
 
+[[data.entries]]
+name = "Virtualization"
+description = "QEMU, Libvirt, Virt-Manager installation and configuration."
+script = "arch/virtualization.sh"
+task_list = "FM I SS RP"
+
 [[data.entries]]
 name = "Yay AUR Helper"
 description = "Yet Another Yogurt - An AUR Helper Written in Go. To know more about AUR helpers visit: https://wiki.archlinux.org/title/AUR_helpers"

docs/userguide.md

@@ -88,6 +88,7 @@ https://github.com/ChrisTitusTech/dwm-titus
 - **Linux Neptune for SteamDeck**: Valve's fork of Linux Kernel for the SteamDeck
 - **Nvidia Drivers && Hardware Acceleration**: This script installs and configures nvidia drivers with Hardware Acceleration.
 - **Paru AUR Helper**: Paru is your standard pacman wrapping AUR helper with lots of features and minimal interaction. To know more about AUR helpers visit: https://wiki.archlinux.org/title/AUR_helpers
+- **Virtualization**: QEMU, Libvirt, Virt-Manager installation and configuration.
 - **Yay AUR Helper**: Yet Another Yogurt - An AUR Helper Written in Go. To know more about AUR helpers visit: https://wiki.archlinux.org/title/AUR_helpers
 
 ### Fedora