General question about using disko when boostraping a system (flakes) about disko HOT 5 CLOSED

I am not 100% sure I get your intention but you can build parts of your nixos system like this:

$ nix repl
Welcome to Nix 2.10.3. Type :? for he
nix-repl> :lf github:Mic92/dotfiles
nix-repl> :b nixosConfigurations.<PRESS_TAB> ...
nix-repl> :b nixosConfigurations.turingmachine.config.system.build.vm

# same as
$ nix build github:Mic92/dotfiles#nixosConfigurations.turingmachine.config.system.build.vm

This assumes that whatever is part of your nixos system is also exposed as an option.
If you want to build tsp-create from your nixos configuration you might need to expose it through a nixos module option:

{
  options.myoption = mkOption {                
     type = types.str;                                     
     default = tsp-create;
  };                                                      
}

$ nix build github:Mic92/dotfiles#nixosConfigurations.turingmachine.config.myoption

However it seems far easier to just expose it through a packages flake output and than just use.

nix run github:Mic92/dotfiles#tsp-create

Notice that when you use pkgs.callPackage you can reuse your partitioning script in both your nixos configuration and in packages.

I am going to close this issue, since it is not disko related. But you can continue to ask questions.

from disko.

Thank you so much for your help, I'll definitely try your suggestion when I get access to my pc.

However it seems far easier to just expose it through a packages flake output and than just use.

Definitely, the problem is that I have three hosts and I wouldnt want to have to expose three different new outputs for each of their disko configurations. Do you know of any way to abstract this?

from disko.

@Mic92 Right now Im trying to follow your option recommendation. This is it (currently a WIP) in case anyone wants to take a look in the future for documentation purposes. (Baitinq/nixos-config#2)

from disko.

@Mic92 Im done with my implementation, maybe we should consider adding some documentation on how this would be achieved? @Lassulus (As it seems like it would be one of the main use cases for disko) For reference (https://github.com/Baitinq/nixos-config/blob/master/hosts/luna/disks.nix) (nix run .#nixosConfigurations.luna.config.disko-create) (nix run .#nixosConfigurations.luna.config.disko-mount)

from disko.

Yeah, looks a nice example.

from disko.