Add flake.nix, non-legacy builds, composer update, fix redirects

README.md

@@ -5,3 +5,23 @@ For the main repository, see [stancl/tenancy](https://github.com/stancl/tenancy)
 ## Dev
 
 You can use `npm run watch`, `npm run dev`, and `npm run production`.
+
+## Nix
+
+A lot of the dependencies in this repo are pretty legacy software by now, so to make building easier
+and more reproducible in the long term, we use Nix to wrap the build process.
+
+Devshell: `nix develop`
+
+Run (dev, watcher): `nix run`
+
+Run (prod build into build_production): `nix run .#production`
+
+Build (reproducible via Nix, result symlinked from store): `nix build`
+
+Build (same as above, but using localhost:8000 as the base URL, prod *non-legacy* build): `nix build .#local`
+
+Build (same as `#local` but only including /docs and /assets): `nix build .#minimalLocal`
+
+Legacy builds assume it's the v3 site on the tenancyforlaravel.com domain. Non-legacy builds do not and as such remove some root level links on the frontend
+(in other words non-legacy builds support minimal builds.)