@@ -9,9 +9,10 @@ for your operating system from the
 
 ## Nix Development Environment
 
-The flake provides Roc nightly, the Rust toolchain and cross-compilation
-standard libraries, Zig, Python, and the documentation preview server on
-supported Linux and macOS systems. Enter it with:
+With Nix's `nix-command` and `flakes` features enabled, the flake provides Roc
+nightly, the Rust toolchain and cross-compilation standard libraries, Zig,
+Python, and the documentation preview server on supported Linux and macOS
+systems. Enter it with:
 
 ```sh
 nix develop