Fix a bug with NixOS unstable

Readme.md

@@ -40,7 +40,7 @@ Linuxloops GUI installer can be run from most linux ditributions live images as
 Detailed instructions:  
 [Using the Linuxloops Live image][live-image]  
 
-### Install a linux distro on a USB flashdrive / SD card or in a disk image (Linux or Windows WSL)
+### Install a linux distro on a USB flashdrive / SD card or in a disk image (from Linux or Windows WSL)
 
 Note: Windows WSL does not allow to write directly to a disk but you can create disk images and write them to a USB flashdrive / SD card using Rufus/Etcher or boot them using [Grub2Win][Grub2Win link].  
 

linuxloops

@@ -15512,7 +15512,6 @@ elif [ "${distribution}" == "NixOS" ]; then
 services.xserver.videoDrivers = [ \"nvidia\" \"modesetting\" \"fbdev\" ];
 hardware.nvidia.open = false;
 hardware.nvidia.powerManagement.enable = true;
-$(if [ \"${version}\" == \"Unstable\" ]; then echo 'hardware.nvidia.open = false;'; fi)
 "
 elif [ "${distribution}" == "Nobara" ]; then
 	cat >"${bootstrapdir}"/tmp/linuxloops/install_nvidia <<INSTALLNVIDIA