Cannot merge definitions of `system.build.installBootLoader'

[novmar]

Hello i am trying to build system, with including file

 <vpsadminos/os/lib/nixos-container/vpsadminos.nix>

and got error:

error: Cannot merge definitions of `system.build.installBootLoader'. Definition values:
       - In `/nix/store/3psgrgjbpd6bkjy143s2niddq35zidfb-git-37d3f75/nixos/modules/virtualisation/container-config.nix': "/nix/store/176gh50y24c0lx2bnnmsvf9wazb73php-coreutils-9.0/bin/true"
       - In `/nix/store/3psgrgjbpd6bkjy143s2niddq35zidfb-git-37d3f75/nixos/modules/system/boot/loader/init-script/init-script.nix': <derivation /nix/store/65w7c71fli7vh0gnqa11272jrc6bqjxj-init-script-builder.sh.drv>

in vpsadminos there are two config parameters, which cause that problem

  boot.loader.initScript.enable = true;
  boot.isContainer = true;

it do this

https://github.com/NixOS/nixpkgs/blob/1477a5e043d36a980ec8c6170293fe563908cef0/nixos/modules/system/boot/loader/init-script/init-script.nix#L45

  config = mkIf config.boot.loader.initScript.enable {

    system.build.installBootLoader = initScriptBuilder;

and this:

https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/virtualisation/container-config.nix#L7

  config = mkIf config.boot.isContainer {
.
.
.
   system.build.installBootLoader = lib.mkDefault "${pkgs.coreutils}/bin/true";

[aither64]

It depends on what nixpkgs version you use.

On NixOS 21.11, yes, there is an unnoticed conflict, but due to some weird merge behaviour, it actually works. At least for me, even now.

NixOS unstable was shortly broken, because the merge behaviour was changed and the conflict surfaced. However, it was resolved in January. So if you use unstable, just update.

[novmar]

yeah, it was solved after some confctl channel update.

[Zurga]

I am still experiencing this issue with vpsAdminOs installation. I am using the 24.07 image. I updated the vpsadminos channel

[aither64]

This issue is about NixOS containers running on vpsAdminOS, not vpsAdminOS itself. What command exactly is failing, what is the output and what is the configuration you're trying to build?

[Zurga]

Ah sorry, I misunderstood. If you prefer, I can make a new ticket instead of resurrecting this one.

This is after running os-install --root /mnt.

The conflicting declarations are in:

• /root/.nix-defexpr/channels/vpsadminos/os/modules/system/activation/top-level.nix
• /root/.nix-defexpr/channels/vpsadminos/os/modules/system/boot/loader/grub/grub.nix

I did a nix-channel --update to get the installer to work in the first place. Vpsadminos channel is tracking staging.

I am building derivationn vpsadminos-24.05.0pre-git

[aither64]

Moved to #72