Revert "Reverts a bunch of commits as a try to fix GC errors."

This reverts commit 1e4ba025c2.

Conflicts:
	pkgs/development/web/nodejs/build-node-package.nix

lib/lists.nix

@@ -234,8 +234,8 @@ rec {
       in [x] ++ remove x xs;
 
   # Intersects list 'e' and another list
-  intersect = e: filter (x: elem x e);
+  intersectLists = e: filter (x: elem x e);
 
-  # Substracts list 'e' from another list
-  substract = e: filter (x: !(elem x e));
+  # Subtracts list 'e' from another list
+  subtractLists = e: filter (x: !(elem x e));
 }