nix: switch to lix

Signed-off-by: Bloxx12 <charlie@charlieroot.dev>
Change-Id: I6a6a69641a5c002234e971b698d9164999be08f3

modules/system/nix/nix.mod.nix

@@ -1,17 +1,20 @@
 # credits to raf
 {
-  config,
   sources,
   lib,
   pkgs,
   ...
 }:
 let
-  inherit (lib.attrsets) mapAttrsToList;
   inherit (lib.modules) mkForce;
+
+  lix = pkgs.callPackage "${sources.lix}/package.nix" {
+    stdenv = pkgs.clangStdenv;
+  };
 in
 {
   nix = {
+    package = lix;
     # Check that Nix can parse the generated nix.conf.
     checkConfig = true;
 
@@ -26,10 +29,14 @@ in
     # registry =
     #   lib.mapAttrs (_: v: {flake = v.outPath;}) sources
     #   // {system.flake = sources.nichts;};
+    registry.nixpkgs.to = {
+      type = "path";
+      source = sources.nixpkgs;
+    };
 
     # Add inputs to the system's legacy channels
     # to make legacy nix commands consistent as well
-    nixPath = mapAttrsToList (key: _: "${key}=flake:${key}") config.nix.registry;
+    nixPath = [ "nixpkgs=/etc/nixos/nixpkgs" ];
 
     # Run the Nix daemon on lowest possible priority
     daemonCPUSchedPolicy = "idle";
@@ -116,7 +123,7 @@ in
         "flakes" # flakes
         "nix-command" # experimental nix commands
         "cgroups" # allow nix to execute builds inside cgroups
-        "pipe-operators"
+        "pipe-operator"
       ];
 
       # Ensures that the result of Nix expressions is fully determined by
@@ -168,6 +175,9 @@ in
     };
   };
 
+  environment.etc = {
+    "nixos/nixpkgs".source = builtins.storePath sources.nixpkgs;
+  };
   systemd.services = {
     # WE DONT WANT TO BUILD STUFF ON TMPFS
     # ITS NOT A GOOD IDEA