@@ -1,19 +1,7 @@
 let
-  sources = import ./npins;
-
-  nixpkgs = sources.nixpkgs;
-  pkgs = import nixpkgs { };
-  inherit (pkgs) lib;
-  # lib = import ./lib { inherit pkgs; };
-  inherit (import ./lib { inherit pkgs; }) mkNixPath fromSources;
+  inherit (import ./sources.nix) nixPath sources;
 
-  nixPath = builtins.concatStringsSep ":" (mkNixPath
-    ({
-      personal = ./packages;
-      nixpkgs-overlays = ./overlays;
-      private = ./private;
-    } // (fromSources sources))
-  );
+  pkgs = import sources.nixpkgs { };
 in
 pkgs.mkShell
 {
@@ -27,7 +15,6 @@ (import sources.home-manager { inherit pkgs; }).home-manager
   ];
 
   shellHook = ''
-    export NIX_PATH="${nixPath}";
+    export NIX_PATH="${builtins.concatStringsSep ":"nixPath}";
   '';
-
 }

@@ -0,0 +1,15 @@
+let
+  sources = import ./npins;
+  pkgs = import sources.nixpkgs { };
+  inherit (import ./lib { inherit pkgs; }) mkNixPath fromSources;
+
+  allSources = {
+    personal = ./packages;
+    nixpkgs-overlays = ./overlays;
+    private = ./private;
+  } // (fromSources sources);
+in
+{
+  sources = allSources;
+  nixPath = mkNixPath allSources;
+}

@@ -1,12 +1,12 @@
-{ pkgs, ... }:
 let
-  lib = import ../../lib { inherit pkgs; };
-  sources = import ../../npins;
+  inherit (import ../../sources.nix) nixPath sources;
 in
 {
-  nix.nixPath = lib.mkNixPath sources;
-  nix.registry.nixpkgs.to = {
-    type = "path";
-    path = sources.nixpkgs;
+  nix = {
+    inherit nixPath;
+    registry.nixpkgs.to = {
+      type = "path";
+      path = sources.nixpkgs;
+    };
   };
 }