I don't know if i like this

modules/nix.nix

@@ -1,66 +0,0 @@
-{
-  nix,
-  inputs,
-  lib,
-  config,
-}:
-{
-  nix = {
-    #
-    # Disable usage of channels
-    #
-    channel.enable = false;
-    #
-    # Flake registry and $NIX_PATH pinning
-    #
-    registry = lib.pipe inputs [
-      (lib.filterAttrs (_: lib.isType "flake"))
-      (lib.mapAttrs (_: flake: { inherit flake; }))
-      (x: x // { nixpkgs.flake = inputs.unstable; })
-    ];
-    nixPath = [ "/etc/nix/path" ];
-    #
-    # Ignore global registry
-    #
-    settings.flake-registry = "";
-    #
-    # Use nix directly from master
-    #
-    package = nix.packages.default;
-    #
-    # Other nix settings
-    #
-    settings = {
-      experimental-features = [
-        "auto-allocate-uids"
-        "ca-derivations"
-        "cgroups"
-        "daemon-trust-override"
-        "dynamic-derivations"
-        "fetch-closure"
-        "flakes"
-        "nix-command"
-        "no-url-literals"
-        "parse-toml-timestamps"
-        "read-only-local-store"
-        "recursive-nix"
-        "configurable-impure-env"
-      ];
-      auto-optimise-store = true;
-      warn-dirty = false;
-      #
-      # Use for testing
-      #
-      #allow-import-from-derivation = false;
-      trusted-users = [ "root" ];
-      allowed-users = [ "@wheel" ];
-      use-xdg-base-directories = true;
-      auto-allocate-uids = true;
-    };
-  };
-
-  environment.etc = lib.mapAttrs' (name: value: {
-    name = "nix/path/${name}";
-    value.source = value.flake;
-  }) config.nix.registry;
-}