docs: nixos-flake ad

Author: srid

doc/howto/direnv.md

@@ -31,6 +31,8 @@ programs.starship = {
 };
 ```
 
+See also https://github.com/srid/nixos-flake for a template configuration to put the home-manager configuration on, regardless of whether you are on Linux or macOS.
+
 ### Text Editor configuration
 
 #### VSCode
@@ -62,4 +64,4 @@ use flake
 
 As a result of this whenever you change a `.cabal` file, direnv will reload the environment. If you are using VSCode, you will see a notification that the environment has changed, prompting you to restart it.
 
-[nix-direnv]: https://github.com/nix-community/nix-direnv
+[nix-direnv]: https://github.com/nix-community/nix-direnv