diff --git a/README.md b/README.md
index f052d37..9ca4398 100644
--- a/README.md
+++ b/README.md
@@ -41,10 +41,22 @@ for flake usage, add this repo as an input and don't input nixpkgs at all, since
 }
 ```
 
-note that overriding inputs to the flake won't necessarily work because of the way nixpkgs registers
-itself with the system. this requires really annoying hacks to get working at all. if you want to
-depend on `dragnpkgs` with a different version of `nixpkgs` (ie not 24.11 or unstable), clone the
-repo and recreate `flake.lock`. aren't flakes so cool and fun!!!!
+note that the dragnpkgs module sets a couple defaults -- see module.nix and the inline modules in
+flake.nix for details
+- disables nixpkgs self-registration in the flake registry and nix path and enables a
+  dragnpkgs-specific registration mechanism for these that is enabled by default, see
+  `options.dragnpkgs`
+- in flake.nix but not in module.nix: disable channels
+- add lix cache and its keys to substitutors
+- enable experimental features `nix-command flakes repl-flake`
+- disable the default flake registry. i think it's cringe
+- add a repl overlay that adds some useful utilities to `nix repl` -- see repl-overlay.nix for
+  details
+
+also note that overriding inputs to the flake won't necessarily work because of the way nixpkgs
+registers itself with the system. this requires really annoying hacks to get working at all. if you
+want to depend on `dragnpkgs` with a different version of `nixpkgs` (ie not 24.11 or unstable),
+clone the repo and recreate `flake.lock`. aren't flakes so cool and fun!!!!
 
 ## options documentation