readme: Simplify flakes instructions

SuperSandro2000 · MattSturgeon · commit ff6ad12a7d9e · 2024-07-17T13:28:28.000+01:00
diff --git a/README.md b/README.md
@@ -133,9 +133,7 @@ system. To enable flakes, add this to `/etc/nixos/configuration.nix`
 { pkgs, lib, ... }:
 {
   nix = {
-    package = pkgs.nixFlakes;
-    extraOptions = lib.optionalString (config.nix.package == pkgs.nixFlakes)
-      "experimental-features = nix-command flakes";
+    settings.experimental-features = [ "nix-command" "flakes" ];
   };
 }
 ```

Original file line number	Diff line number	Diff line change
@@ -133,9 +133,7 @@ system. To enable flakes, add this to `/etc/nixos/configuration.nix`
`133`	`133`	`{ pkgs, lib, ... }:`
`134`	`134`	`{`
`135`	`135`	`nix = {`
`136`		`- package = pkgs.nixFlakes;`
`137`		`- extraOptions = lib.optionalString (config.nix.package == pkgs.nixFlakes)`
`138`		`- "experimental-features = nix-command flakes";`
	`136`	`+ settings.experimental-features = [ "nix-command" "flakes" ];`
`139`	`137`	`};`
`140`	`138`	`}`
`141`	`139`	```