{
  description = "NixOS configuration";

  inputs = {
    # nixpkgs Unstable Inputs
    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
    home-manager-unstable.url = "github:nix-community/home-manager";
    home-manager-unstable.inputs.nixpkgs.follows = "nixpkgs-unstable";
    #nix-darwin-unstable.url = "github:lnl7/nix-darwin/master";
    #nix-darwin-unstable.inputs.nixpkgs.follows = "nixpkgs-unstable";

    tree-input.url = "github:kittywitch/tree";
    tree-input.inputs.nixpkgs.follows = "nixpkgs-unstable";

    # update whenever
    nixpkgs-fixed.url = "github:nixos/nixpkgs/?branch=nixos-unstable&rev=fab09085df1b60d6a0870c8a89ce26d5a4a708c2";

    nur.url = "github:nix-community/NUR";

    deploy-rs.url = "github:serokell/deploy-rs";
    deploy-rs.inputs.nixpkgs.follows = "nixpkgs-fixed";

    musicutil.url = "gitlab:ChaotiCryptidz/musicutil";
    musicutil.inputs.nixpkgs.follows = "nixpkgs-fixed";

    gitlab_archiver.url = "gitlab:ChaotiCryptidz/gitlab_archiver";
    gitlab_archiver.inputs.nixpkgs.follows = "nixpkgs-fixed";

    gitlab_artifacts_sync.url = "gitlab:ChaotiCryptidz/gitlab_artifacts_sync";
    gitlab_artifacts_sync.inputs.nixpkgs.follows = "nixpkgs-fixed";
  };

  outputs = {...} @ inputs: import ./outputs.nix inputs;
}