[BUG] Following nixpkgs-unstable does not work about nixvim

[GaetanLepage]

The issue here is that even though you have set inputs.nixpkgs.follows = "nixpkgs-unstable" for the nixvim input, this has no impact.
Indeed, the pkgs attrs used by nixvim will be inherited from home-manager and will thus be following the 23.11 channel.
If you want to have such a setup where your NixOS and HM systems follow a stable branch while having nixvim unstable is to configure the latter in a standalone flake.
Here is an example: https://github.com/redyf/Neve

[pinarruiz]

Thanks @GaetanLepage this worked like a charm.

[GaetanLepage]

Doesn't work for me. I have both HM and Nixvim following nixpkgs-unstable, but still facing the same issue.

If you are using HM as a NixOS module, then the same kind of logic may apply.
HM has an option called useGlobalPkgs which decides which pkgs instance is used.
Maybe try to look in this direction.
Anyway, if you want to have stable NixOS but unstable nixvim, you might want to consider using a standalone flake.

[cudatuda]

Doesn't work for me. I have both HM and Nixvim following nixpkgs-unstable, but still facing the same issue.

Here is my flake.nix:

  inputs = {

    nixpkgs.url = "github:nixos/nixpkgs/nixos-23.11";
    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";

    home-manager = {
      url = "github:nix-community/home-manager/release-23.11";
      inputs.nixpkgs.follows = "nixpkgs-unstable";
    };

    nixvim = {
      url = "github:nix-community/nixvim";
      inputs.nixpkgs.follows = "nixpkgs-unstable";
    };
    
  };

Am i missing something?