boot.loader.grub.configurationName unused?

[Shou]

Issue description

Setting boot.loader.grub.configurationName in /etc/nixos/configuration.nix to anything still generates an entry named NixOS - Default in GRUB.

Technical details

• System: 16.09pre82105.7465bcd (Flounder)
• Nix version: nix-env (Nix) 1.11.2
• Nixpkgs version: "16.09pre82105.7465bcd"

[stefano-m]

I have just realized that this is still the case in NixOS 17.09.

AFAIU, configurationName is referenced in nixos/modules/system/activation/top-level.nix only. The script that generates the grub menu entries is nixos/modules/system/boot/loader/grub/install-grub.pl where "NixOS - Default" is hardcoded.

I am not sure about the current use of configurationName, but it seems that the following change in the Perl script may work (disclaimer: I'm not familiar with Perl)

my $configurationName = get("configurationName") or "NixOS - Default";

# and then

addEntry($configurationName, $defaultConfig);

[stale[bot]]

Thank you for your contributions.

This has been automatically marked as stale because it has had no activity for 180 days.

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[x3rAx]

This still does not work. In my Grub boot menu the entries are still named "NixOS - Default" and so on instead of "Kirbix - Default".

This is my boot loader config:

{ config, pkgs, ... }:

{
  # [...] #

  boot.loader = {
    timeout = 1;
    efi = {
      canTouchEfiVariables = true;
      efiSysMountPoint = "/boot/efi";
    };
    grub = {
      enable = true;
      version = 2;
      device = "nodev";
      efiSupport = true;
      efiInstallAsRemovable = false;
      memtest86.enable = true;
      backgroundColor = "#000000";
      splashImage = ./res/nixos-boot-background-scaled.png;
      configurationName = "Kirbix";
      # Get gfxmodes from the grub cli with `videoinfo`
      gfxmodeEfi = "1280x1024";
      enableCryptodisk = true;
      extraInitrd = /boot/initrd.keys.gz;
    };
  };

  # [...] #

}

[stale[bot]]

I marked this as stale due to inactivity. → More info

[GrabbenD]

Still not solved :smiling_face_with_tear:

[vSLG]

Still not solved :\

[bertbesser]

bumping, b/c i would find this handy

[vSLG]

I work around this with the following snippet, edit according to your needs

system.activationScripts.update-grub-menu = {
  text = ''
    echo "Updating GRUB menu entry name..."

    GRUB_CFG="/boot/grub/grub.cfg"
    BACKUP_GRUB_CFG="/boot/grub/grub.cfg.bak"
    SEARCH_STR="\"NixOS"
    REPLACE_STR="\"<whatever text you want>"

    if [ -f "$GRUB_CFG" ]; then
        cp "$GRUB_CFG" "$BACKUP_GRUB_CFG"
        ${pkgs.gnused}/bin/sed -i "s/$SEARCH_STR/$REPLACE_STR/g" "$GRUB_CFG"
    else
        echo "Error: GRUB configuration file not found."
    fi
  '';
};

[tomodachi94]

Perhaps relevant: https://github.com/NixOS/nixpkgs/pull/3796 (bd811d32b4b194b9e551a66069641a76bd8eab58), and its revert 4061c18c9878ca4b97a0e97debd5c533fc1422ff,