[Nix-dev] NixOS installation on multi-boot system with GRUB

[Henning Thielemann]

On Thu, 27 Aug 2015, 宋文武 wrote:

> I think you can:
>  install NixOS's GRUB to its boot partitation, then add a 'chainloader'
>  menu entry to your main GRUB (installed into MBR by Ubuntu).
>  I did this with btrfs (ext4 did't work for me):
>    boot.loader.grub.device = "/dev/sdaX";
>  (sdaX is the boot or root partition)
>  # grub.cfg
>  menuentry 'NixOS' {
>    set root='(hd0,X)'
>    chainloader +1
>  }
>
>  install NixOS without GRUB, then add a 'configfile' menu entry to your
>  GRUB to load NixOS's grub.cfg.
>  I guess it look like:
>    boot.loader.grub.device = "nodev";
>  # grub.cfg
>  menuentry 'NixOS' {
>    set root='(hd0,X)'
>    configfile '/boot/grub/grub.cfg';
>  }


I find no /boot/grub/grub.cfg on the NixOS partition, not even a 'grub' 
directory. Am I supposed to write a grub.cfg myself or should 
nixos-install create one for me? If the latter one, how can I make 
nixos-install create a grub.cfg for me but not install a boot-loader?