How to specify an overlay for pkgs ?

[gaelreyrol]

Hi!

I am using multiple overlays over the standard pkgs attribute to access unstable & master channels:

nixpkgs.overlays = [
  (final: prev: {
    unstable = builtins.import inputs.unstable {
      inherit (final) config;
      inherit system;
    };
  })
  (final: prev: {
    master = builtins.import inputs.master {
      inherit (final) config;
      inherit system;
    };
  })
]

As I am using the master branch of nixvim, it expects pkgs to be the unstable channel. Mine targets nixos-23.05, I would like to know if there was a way to pass to nixvim.nixosModules.nixvim a specific pkgs attribute. For example:

modules = [
  nixvim.nixosModules.nixvim
  {
    nixvim.pkgs = pkgs.unstable;
  }
];

Thanks for your time!

[GaetanLepage]

Hello !
Actually, it depends on how you use nixvim.
If you use it as a standalone flake, then you can provide it with any nixpkgs of your choice.
However, if you use the nixvim home-manager or NixOS module, then it will inherit whatever is your system pkgs.

In the end, if your system pkgs is nixos-23.05, I am afraid that you are constrained to using the nixos-23.05 branch of nixvim.

[GaetanLepage]

We currently don't backport anything but bugfixes to the stable branch. Hence, the nixos-23.05 branch of nixvim is more or less untouched since when it has been created (in may).
If you really need newer plugins and additions to nixvim, then either you switch your system nixpkgs to an unstable channel, or you use nixvim as a standalone flake (see here).

[gaelreyrol]

Thanks for your answers, I managed to use the standalone method instead of the module to provide my own channel !