diff --git a/flake.nix b/flake.nix
index dccbe24..2ccba12 100644
--- a/flake.nix
+++ b/flake.nix
@@ -23,11 +23,8 @@
     nixpkgs,
     nix-unit,
   }: let
-    # TODO: implement mix.extend and mix.isolate
     inherit
       (mix)
-      extend
-      # isolate
       newMixture
       ;
 
@@ -35,6 +32,9 @@
     inputs = {
       inherit mix;
       flake = self;
+      # flake dependencies
+      # NOTE: the NixTypes library has no dependencies
+      # NOTE: but the developer tooling (for me) does
       # XXX: TODO: implement mix.extend instead of this
       deps = {
         inherit nixpkgs nix-unit;
@@ -42,20 +42,11 @@
       };
     };
 
-    # flake dependencies
-    # NOTE: the NixTypes library has no dependencies
-    # NOTE: but the developer tooling (for me) does
-    deps = {
-      inherit systems nixpkgs nix-unit;
-    };
-
-    bootstrap = import ./nt/primitives/std;
+    bootstrap = import ./nt/precursor/bootstrap;
     mix = import ./nt/mix/bootstrap.nix {this = bootstrap;};
   in
     newMixture inputs (mixture: {
       includes.public = [
-        # XXX: TODO: implement mix.extend
-        # (extend ./flake deps)
         ./flake
         ./nt
       ];
diff --git a/nt/default.nix b/nt/default.nix
index 9359fc1..5ddda99 100644
--- a/nt/default.nix
+++ b/nt/default.nix
@@ -1,7 +1,10 @@
 {mix, ...} @ inputs:
 mix.newMixture inputs (mixture: {
+  isolated = true;
   includes.public = [
     ./precursor
+
+    # (mix.isolate mix)
   ];
   submods.public = [
     ./mix
diff --git a/nt/mix/import.nix b/nt/mix/import.nix
index 1d9af68..86f0990 100644
--- a/nt/mix/import.nix
+++ b/nt/mix/import.nix
@@ -1,9 +1,12 @@
 {nt, ...}: let
   inherit
     (builtins)
+    foldl'
     isAttrs
     isFunction
-    listToAttrs
+    isList
+    isPath
+    mapAttrs
     typeOf
     ;
 
@@ -11,11 +14,15 @@
     (nt)
     enfIsPrimitive
     hasInfix
-    mergeAttrsList
-    nameValuePair
     removeSuffix
     ;
 
+  inherit
+    (nt.naive.terminal)
+    isTerminal
+    unwrapTerminal
+    ;
+
   modNameFromPath = path: let
     name = baseNameOf path |> removeSuffix ".nix";
   in
@@ -40,22 +47,47 @@ in rec {
         # TODO: create a better version of toString that can handle sets, lists, and null
         assert isFunction mod
         || throw ''
-          Mix modules expect primitive type "set" or "lambda" (returning "set").
+          Imported Mix modules must be provided as primitive types "set" or "lambda" (returning "set").
           Got primitive type "${typeOf mod}" instead.
         '';
         assert isAttrs modResult
         || throw ''
-          Mix module provided as primitive type "lambda" must return primitive type "set"!
+          Imported Mix module provided as primitive type "lambda" must return primitive type "set"!
           Got primitive return type "${typeOf modResult} instead."
         ''; modResult;
 
-  mkIncludes = list: inputs:
-    list
-    |> map (path: (importMod path inputs))
-    |> mergeAttrsList;
+  mkMod = pathDelegate: target: extraInputs: let
+    this = delegate target;
+    inputs = {inherit this;} // extraInputs;
 
-  mkSubMods = list: inputs:
-    list
-    |> map (path: nameValuePair (modNameFromPath path) (importMod path inputs))
-    |> listToAttrs;
+    delegate = target:
+    # PATH
+      if isPath target
+      then pathDelegate target inputs
+      # LIST
+      else if isList target
+      then target |> foldl' (acc: el: acc // delegate el) {}
+      # TERMINAL
+      else if isTerminal target
+      then unwrapTerminal target
+      # ATTRS
+      else if isAttrs target
+      then target |> mapAttrs (_: value: delegate value)
+      # FUNCTION (OR FAIL)
+      else
+        assert isFunction target
+        || throw ''
+          Mix module provided as invalid primitive type "${typeOf target}".
+        '';
+          target inputs;
+  in
+    this;
+
+  mkIncludes = target: inputs: mkMod importMod target inputs;
+  mkSubMods = target: inputs:
+    mkMod (path: inputs': {
+      ${modNameFromPath path} = importMod path inputs';
+    })
+    target
+    inputs;
 }
diff --git a/nt/precursor/default.nix b/nt/precursor/default.nix
index 66b0cc2..934bf0d 100644
--- a/nt/precursor/default.nix
+++ b/nt/precursor/default.nix
@@ -4,10 +4,12 @@ mix.newMixture inputs (mixture: {
   includes = {
     public = [
       ./nt
+      # XXX: DEBUG: make this protected
+      ./bootstrap
     ];
     protected = [
       # XXX: WARNING: reimplement std but typesafe
-      ./bootstrap
+      # ./bootstrap
     ];
   };
 })