better WSLg detection, still extremely slow

If you're using WSLg, consider using KVM instead of VirtualBox

macos-guest-virtualbox.sh

@@ -2,7 +2,7 @@
 # Push-button installer of macOS on VirtualBox
 # (c) myspaghetti, licensed under GPL2.0 or higher
 # url: https://github.com/myspaghetti/macos-virtualbox
-# version 0.99.1.1
+# version 0.99.1.2
 
 #       Dependencies: bash  coreutils  gzip  unzip  wget  xxd  dmg2img
 #  Optional features: tesseract-ocr  tesseract-ocr-eng
@@ -280,6 +280,21 @@ if [[ -n "$(cygcheck -V 2>/dev/null)" ]]; then
             exit
         fi
     fi
+# Windows Subsystem for Linux 2 (WSL2 or WSLg)
+elif [[ "$(cat /proc/sys/kernel/osrelease 2>/dev/null)" =~ WSL[2Gg] ]]; then  # WSL2 or WSLg
+    if [[ -n "$(VBoxManage -v 2>/dev/null)" ]]; then
+        if [[ ! "$(lsmod)" =~ vboxdrv ]]; then  # if the vboxdrv kernel module is not present
+            echo "The script appears to be executed on WSL2 or WSLg."
+            echo "Mind that WSL2 and WSLg require kernel module compilation and"
+            echo "custom configuration that is not supported by the script."
+            echo "If the script does not detect the ${highlight_color}vboxdrv${default_color} kernel module, it exits."
+            exit
+        fi
+    else
+        echo "Please make sure VirtualBox version 5.2 or higher is installed,"
+        echo "and that the path to the VBoxManage executable is in the PATH variable."
+        exit
+    fi
 # Windows Subsystem for Linux (WSL "1") 
 elif [[ "$(cat /proc/sys/kernel/osrelease 2>/dev/null)" =~ [Mm]icrosoft ]]; then
     if [[ -n "$(VBoxManage.exe -v 2>/dev/null)" ]]; then
@@ -297,22 +312,10 @@ elif [[ "$(cat /proc/sys/kernel/osrelease 2>/dev/null)" =~ [Mm]icrosoft ]]; then
             }
             echo "Found VBoxManage"
         else
-            if [[ "$(cat /proc/sys/kernel/osrelease 2>/dev/null)" =~ WSL[2Gg] ]]; then  # WSL2 or WSLg
+            echo "Please make sure VirtualBox is installed on Windows, and that the path to the"
-                if [[ -n "$(VBoxManage -v 2>/dev/null)" ]]; then
+            echo "VBoxManage.exe executable is in the PATH variable, or assigned in the script"
-                    true # do nothing
+            echo -e "to the variable \"${highlight_color}wsl_path_VBoxManage${default_color}\" including the name of the executable."
-                else
+            exit
-                    echo "Please make sure VirtualBox version 5.2 or higher is installed,"
-                    echo "and that the path to the VBoxManage executable is in the PATH variable."
-                    echo "Mind that WSL2 and WSLg require kernel module compilation and custom"
-                    echo "configuration that is not supported by the script."
-                    exit
-                fi
-            else
-                echo "Please make sure VirtualBox is installed on Windows, and that the path to the"
-                echo "VBoxManage.exe executable is in the PATH variable, or assigned in the script"
-                echo -e "to the variable \"${highlight_color}wsl_path_VBoxManage${default_color}\" including the name of the executable."
-                exit
-            fi
         fi
     fi
 # everything else (not cygwin and not wsl)