1 files changed, 17 insertions, 0 deletions

diff --git a/README.md b/README.md
index b6053d2..b61a316 100644
--- a/README.md
+++ b/README.md
@@ -7,9 +7,26 @@ Some of them are already in PR form, some are still being worked on.
 
 ## Usage
 
+### As a Nix channel
 Add this repository to your Nix channels:
 
 ```
 $ nix-channel --add https://git.sixfoisneuf.fr/nixpkgs/snapshot/nixpkgs-master.tar.gz sixfoisneuf
 $ nix-channel --update
 ```
+
+### As a nixpkgs overlay
+
+Add this to your `configuration.nix`:
+
+```nix
+{
+  nixpkgs.overlays = [
+    (import "${fetchTarball "https://git.sixfoisneuf.fr/nixpkgs/snapshot/nixpkgs-master.tar.gz"}/overlay.nix")
+  ];
+
+  environment.systemPackages = with pkgs; [
+    passwdqc
+  ]
+}
+```
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