Branch: refs/heads/master
  Home:   https://github.com/NixOS/nixpkgs
  Commit: b12debc076ab27aff0bd70c3fa3ced62f8f95d38
      
https://github.com/NixOS/nixpkgs/commit/b12debc076ab27aff0bd70c3fa3ced62f8f95d38
  Author: jokogr <ioannis.kout...@gmail.com>
  Date:   2016-09-25 (Sun, 25 Sep 2016)

  Changed paths:
    M nixos/modules/system/boot/loader/grub/grub.nix

  Log Message:
  -----------
  grub: Do not check for duplicated devices in mirroredBoots on UEFI (#18625)

When Grub is to be used with UEFI, it is not going to write to any MBR
of any disk. As such, it is safe to use multiple "nodev" device entries
when mirroring the ESP partition to multiple disks.

E.g.:

```
boot.loader.grub = {
  enable = true;
  version = 2;
  zfsSupport = true;
  efiSupport = true;
  mirroredBoots = [
    { devices = [ "nodev" ]; path = "/boot1"; efiSysMountPoint = "/boot1"; }
    { devices = [ "nodev" ]; path = "/boot2"; efiSysMountPoint = "/boot2"; }
    { devices = [ "nodev" ]; path = "/boot3"; efiSysMountPoint = "/boot3"; }
  ];
};

boot.loader.efi.canTouchEfiVariables = true;
```

Fixes #18584


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