diff --git a/README.md b/README.md
index c884401..8a6c375 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,9 @@
 
 This repository contains an example image gallery and `image-targets.txt` metadata describing where in a static site those images should live.
 
+It is intended to be read in as a subtree to its [build pipeline](https://github.com/Smaug123/static-site-pipeline).
+(You could alternatively use it as a submodule, if you are happy to forgo [Nix support](https://github.com/NixOS/nix/pull/5497).)
+
 ## The licence
 
 See `LICENSE` for a copy of the CC BY-SA 4.0 licence, which covers the `CoventGarden.jpg` and `CoventGarden.md` files.